U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

Search

50  Search Results

1 - 50 of 50
Number of results to display per page

Search Results

1. Boll distribution patterns in Bt and non-Bt cotton cultivars: I. Study on commercial irrigated farming systems in South Africa

Author:
Hofs, J.L.; Hau, B.; Marais, D.
Source:
Field crops research 2006 v.98 no.2-3 pp. 203-209
ISSN:
0378-4290
Subject:
cotton; Helicoverpa zea; cultivars; isogenic lines; insect pests; profitability; irrigation; Gossypium hirsutum; transgenic plants; spatial distribution; plant-incorporated protectants; farming systems; fruiting; plant pests; agronomic traits; crop yield; Bacillus thuringiensis; bolls; South Africa
DOI:
10.1016/j.fcr.2006.01.006

2. Boll distribution patterns in Bt and non-Bt cotton cultivars: II. Study on small-scale farming systems in South Africa

Author:
Hofs, J.L.; Hau, B.; Marais, D.; Fok, M.
Source:
Field crops research 2006 v.98 no.2-3 pp. 210-215
ISSN:
0378-4290
Subject:
Helicoverpa zea; profitability; small-scale farming; spatial distribution; crop yield; Gossypium hirsutum; plant-incorporated protectants; farm income; plant pests; Bacillus thuringiensis; cultivars; isogenic lines; insect pests; dryland farming; bolls; cotton; transgenic plants; intensive cropping; agronomic traits; fruiting; South Africa
DOI:
10.1016/j.fcr.2006.01.007

3. Boll size affects the insecticidal protein content in Bacillus thuringiensis (Bt) cotton

Author:
Wang, Yonghui; Ye, Guoyou; Luan, Na; Xiao, Jian; Chen, Yuan; Chen, Dehua
Source:
Field crops research 2009 v.110 no.2 pp. 106-110
ISSN:
0378-4290
Subject:
Gossypium hirsutum; cotton; bolls; transgenic plants; insecticidal proteins; crystal proteins; protein content; Bacillus thuringiensis; plant-incorporated protectants; cultivars; fruiting; genetic variation; seeds; weight; China
Abstract:
... Bacillus thuringiensis (Bt) transgenic cotton has been planting in large-scale for more than 10 years in China. It was observed that resistance to bollworm was reduced with the application of big-boll cultivars in China. The objective of the study was to investigate the effects of boll size on the contents of CryIA insecticidal protein in boll shell and cotton seed during the course of boll develo ...
DOI:
10.1016/j.fcr.2008.07.008

4. Breeding Potentials of Noncultivated Cottons. IV. Location and Parental Effects on Agronomic Characters and Fiber Properties in Hybrids

Author:
F. D. Wilson; R. L. Wilson
Source:
Crop science 1978 v.18 no.3 pp. 467-471
ISSN:
0011-183X
Subject:
Gossypium hirsutum; Pectinophora gossypiella; agronomic traits; bolls; cotton; cultivars; fiber quality; genetic variation; heterosis; hybrids; inheritance (genetics); insecticides; Arizona
Abstract:
... We studied the inheritance of six agronomic characters and five fiber properties in Ft hybrids between two cultivars and eight primitive race stocks of cotton, Gossypium hirsutum L., in 1975 and between the same two cultivars and four other race stocks in 1976. Plants were grown at Phoenix, Ariz., where insecticides were applied as needed for control of pink bollworm, Pectinophora gossypiella (Sau ...
DOI:
10.2135/cropsci1978.0011183X001800030028x

5. Breeding Potentials of Noncultivated Cottons. V. Productivity of Cultivars, Race Stocks, and F1 Hybrids among Them in Long- and Short-Day Environments

Author:
F. D. Wilson; B. W. George
Source:
Crop science 1981 v.21 no.3 pp. 410-414
ISSN:
0011-183X
Subject:
cotton; cultivars; heterosis; hybrids; environment; races; winter; Gossypium hirsutum; parents; agronomic traits; genotype-environment interaction; additive gene effects; summer; genetic variation; bolls; lint yield; Puerto Rico
Abstract:
... Twelve primitive race stocks of cotton (Gossypiura hirsutum L.), four Upland cultivars, and 24 race stock ✕ cultivar F₁ hybrids were grown in three replicated tests in the summer at Phoenix, Ariz. and in the winter at Isabela, Puerto Rico. Objectives of this research were to compare productivity, to study hybrid expression of agronomic properties, and to determine the effects of cultivar ✕ race st ...
Handle:
10113/54604
DOI:
10.2135/cropsci1981.0011183X002100030014x

6. Carbon partitioning in the boll plays an important role in fiber quality in colored cotton

Author:
Meiling Zhang; Xianliang Song; Hong Ji; Zhenlin Wang; Xuezhen Sun
Source:
Cellulose 2017 v.24 no.2 pp. 1087-1097
ISSN:
0969-0239
Subject:
Gossypium hirsutum; bolls; carbon; cellulose; color; cotton; cultivars; dry matter accumulation; flowering; harvest index; leaves; micronaire; photosynthesis; seeds
Abstract:
... Assays were conducted to examine the photosynthesis of stem leaves and subtending leaves of cotton bolls, the fiber-quality parameters length, strength and micronaire, and dry matter accumulation in fibers, seeds and burs during fiber development in the colored cotton cultivars ZX-1 and G-7 and the white cotton cultivar LMY28. The results showed that fiber-quality parameters were all lower in ZX-1 ...
DOI:
10.1007/s10570-016-1139-z

7. Comparative expression of miRNA genes and miRNA-based AFLP marker analysis in cultivated tetraploid cottons

Author:
Mingxiong Pang; Chaozhu Xing; Nick Adams; Laura Rodriguez-Uribe; S.E. Hughs; Stephen F. Hanson; Jinfa Zhang
Source:
Journal of plant physiology 2011 v.168 no.8 pp. 824-830
ISSN:
0176-1617
Subject:
Gossypium barbadense; Gossypium hirsutum; amplified fragment length polymorphism; bolls; cotton; cultivars; gene expression; gene expression regulation; gene targeting; genes; genetic variation; genotype; growth and development; microRNA; plant growth control; tetraploidy
Abstract:
... MicroRNAs (miRNAs) are a class of small non-coding RNAs that down-regulate gene expression in a sequence specific manner to control plant growth and development. The identification and characterization of miRNAs are critical steps in finding their target genes and elucidating their functions. The objective of the present study was to assess the genetic variation of miRNA genes through expression c ...
DOI:
10.1016/j.jplph.2010.10.006
PubMed:
21134704

8. Comparisons of Two Statistical Models for Evaluating Boll Retention in Cotton

Author:
Jixiang Wu; Johnie N. Jenkins; Jack C. McCarty; Clarence E. Watson
Source:
Agronomy journal 2005 v.97 no.5 pp. 1291-1294
ISSN:
0002-1962
Subject:
cotton; crop models; cultivars; linear models; Gossypium hirsutum; fruit set; fiber crops; regression analysis; fruit drop; yield components; inbred lines; bolls; Mississippi
Abstract:
... Boll number is one of the most important traits related to yield of upland cotton (Gossypium hirsutum L.). Evaluation of boll retention properties at different fruiting sites would provide useful information for cotton breeding and cotton growth management. The presence or absence of a boll at each fruiting position can be considered as binomially distributed. In this study, 188 upland cotton reco ...
Handle:
10113/2863
DOI:
10.2134/agronj2004.0216

9. Cotton Population Dynamics: Influence of the Within-the-Row Spacing and Emergence Time

Author:
D. F. Wanjura; J. D. Bilbro
Source:
Agronomy journal 1977 v.69 no.2 pp. 312-318
ISSN:
0002-1962
Subject:
Gossypium hirsutum; bolls; cotton; cultivars; developmental stages; plant height; population dynamics; sample size; stem nodes
Abstract:
... Dynamic and stochastic properties of cotton (Gossypium hirsutum L.) plant populations increase the difficulty of production management. The influence of four within-the-row plant spacings on beds spaced at 102 an (5, 20, and 40 cm, and random 7.5 to 10 cm) and three times of emergence (5, 7, and 9 days in 1973; 6, 8, and 10 days in 1974) on means and coefficient(s) of variability (CV) of plant hei ...
DOI:
10.2134/agronj1977.00021962006900020027x

10. Cotton Stage of Growth Determines Sensitivity to 2,4-D

Author:
Byrd Seth A.; Collins Guy D.; Culpepper A. Stanley; Dodds Darrin M.; Edmisten Keith L.; Wright David L.; Morgan Gaylon D.; Baumann Paul A.; Dotray Peter A.; Manuchehri Misha R.; Jones Andrea; Grey Timothy L.; Webster Theodore M.; Davis Jerry W.; Whitaker Jared R.; Roberts Phillip M.; Snider John L.; Porter Wesley M.
Source:
Weed technology 2015 v.30 no.3 pp. 601-610
ISSN:
0890-037X
Subject:
2,4-D; Gossypium hirsutum; bolls; corn; cotton; cultivars; developmental stages; epinasty; leaves; soybeans; vegetative growth; weeds
Abstract:
... The anticipated release of Enlistᵀᴹ cotton, corn, and soybean cultivars likely will increase the use of 2,4-D, raising concerns over potential injury to susceptible cotton. An experiment was conducted at 12 locations over 2013 and 2014 to determine the impact of 2,4-D at rates simulating drift (2 g ae ha⁻¹) and tank contamination (40 g ae ha⁻¹) on cotton during six different growth stages. Growth ...
DOI:
10.1614/WT-D-15-00191.1

11. Cotton production during the tropical monsoon season. I – The influence of variable radiation on boll loss, compensation and yield

Author:
Paul R. Grundy; Stephen J. Yeates; Kerry L. Bell
Source:
Field crops research 2020 v.254 pp. 107790
ISSN:
0378-4290
Subject:
Gossypium hirsutum; administrative management; bolls; canopy; correlation; cotton; cultivars; early flowering; fiber quality; field crops; field experimentation; fruit drop; fruiting; irrigation; late flowering; light intensity; lint yield; monsoon season; research; shade; solar radiation; sowing date; temperature; tropics; yield components
Abstract:
... Growth and reproductive structure development in cotton (Gossypium hirsutum) is dependent on light intensity, which is often irregular in tropical environments due to shading from cloudiness associated with the monsoon. The objective of this study was to evaluate the effects of cloudiness on reproductive organ abscission and how subsequent compensatory organ replacement, with the provision of irri ...
DOI:
10.1016/j.fcr.2020.107790

12. Cotton production during the tropical monsoon season. II – Biomass accumulation, partitioning and RUE in response to boll loss and compensation

Author:
Paul R. Grundy; Stephen J. Yeates; Kerry L. Bell
Source:
Field crops research 2020 v.255 pp. 107868
ISSN:
0378-4290
Subject:
Gossypium hirsutum; Ruta graveolens; administrative management; biomass production; bolls; canopy; cloud cover; compensatory growth; cotton; crop management; cultivars; dry matter partitioning; early flowering; field crops; field experimentation; fruit drop; fruiting; glucose; irrigation; late flowering; light intensity; lint yield; monsoon season; paper; radiation use efficiency; research; shade; sowing date; tropics
Abstract:
... Growth and reproductive structure retention in cotton (Gossypium hirsutum) is dependent on light intensity, which is often irregular in tropical environments due to shading from cloudiness associated with the monsoon. The objective of this study was to evaluate the potential effects that cloudiness-induced reproductive organ abscission and compensatory responses might have on cotton growth, partit ...
DOI:
10.1016/j.fcr.2020.107868

13. Cotton yield and fiber quality affected by row spacing and shading at different growth stages

Author:
Fábio R. Echer; Ciro A. Rosolem
Source:
European journal of agronomy 2015 v.65 pp. 18-26
ISSN:
1161-0301
Subject:
Gossypium hirsutum; bolls; cloud cover; cotton; crop yield; cultivars; fiber quality; flowering; fruit maturity; irrigation; phenology; photosynthesis; plant density; planting date; row spacing; shade; shade tolerance; sowing date
Abstract:
... Carbohydrate production and reproductive structure development in cotton (Gossypium hirsutum) depends on light availability, a determinant of cotton yield. Light availability is decreased by cloud cover or self-shading when cotton plants are grown in dense populations. The objective of this study was to evaluate the effects of shading during cotton growth and its interactions with plant row spacin ...
DOI:
10.1016/j.eja.2015.01.001

14. Distribution of bollworm, Helicoverpa zea (Boddie), injured reproductive structures on genetically engineered Bacillus thuringiensis var. kurstaki Berliner cotton

Author:
Gore, J.; Leonard, B.R.; Gable, R.H.
Source:
Journal of economic entomology 2003 v.96 no.3 pp. 699-705
ISSN:
0022-0493
Subject:
cotton; Helicoverpa zea; cultivars; pest management; insect pests; buds; Gossypium hirsutum; transgenic plants; economic threshold; Bacillus thuringiensis subsp. kurstaki; crop damage; flowers; crystal proteins; genetic engineering; larvae; bolls
DOI:
10.1093/jee/96.3.699
PubMed:
12852607

15. Effect of Glyphosat and Paraquat Herbicides on Weed Control and Productivity of Cotton

Author:
R.A. Hameed; S. Ajum; M.N. Afzal
Source:
Cercetări agronomice în Moldova 2017 v.50 no.2 pp. 51-56
ISSN:
2067-1865
Subject:
Gossypium hirsutum; application rate; biomass; bolls; cost benefit analysis; cotton; cultivars; glyphosate; paraquat; sowing; weed control; yield components; Pakistan
Abstract:
... Weed control management has a vital role in increasing cotton yield and yield components. In cotton crop weed, infestation may harm significant growth and yield loses. To control the weeds under field conditions in cotton crop, different herbicides were selected with different dose levels. Response of various post emergence herbicides at different levels, i.e. Round up 490 G/L at the rate of 4.7 L ...
DOI:
10.1515/cerce-2017-0014

16. Effect of cotton cultivars on the oviposition preference of pink bollworm (Lepidoptera: Gelechiidae)

Author:
Chatzigeorgiou, A. C.; Papadopoulos, N. T.; Prophetou-Athanasiadou, D. A.
Source:
Journal of pest science 2010 v.83 no.3 pp. 289-296
ISSN:
1612-4758
Subject:
Gossypium hirsutum; Pectinophora gossypiella; bolls; calyx; cotton; cultivars; cultivation area; eggs; females; nectaries; oviposition; petioles; trichomes
Abstract:
... The effect of four cotton cultivars on the oviposition behavior of the pink bollworm Pectinophora gossypiella (Saunders) was studied under laboratory and semi-field conditions. Young plants and bolls from four commercial upland cotton cultivars (Lachata, Macnair-220, Midas and Sandra) cultivated in the area of Thessaloniki were used. The four cultivars had palmate leaves, and nectaries on both lea ...
DOI:
10.1007/s10340-010-0297-2

17. Effect of potassium fertilization on leaf physiology, fiber yield and quality in cotton (Gossypium hirsutum L.) under irrigated Mediterranean conditions

Author:
Ioannis T. Tsialtas; Sergey Shabala; Demetrios Baxevanos; Theodora Matsi
Source:
Field crops research 2016 v.193 pp. 94-103
ISSN:
0378-4290
Subject:
flowering; gas exchange; cations; carbon; nutrients; carbon dioxide; correlation; growers; stomatal conductance; irrigation; Gossypium hirsutum; fertilizer application; isotopes; sodium; fiber quality; leaves; cultivars; calcium; leaf area; soil; leaf water potential; physiological response; potassium; temperature; bolls; Mediterranean climate; cotton; potassium fertilizers; flowers; magnesium; growing season; lint yield
Abstract:
... The aim of this work was to study the physiological, yield and quality responses of two upland cotton cultivars (Greek and Australian), grown on light-textured soil under irrigated, Mediterranean conditions, to three potassium levels (0, 80, 160kgK2Oha−1). Despite its pivotal role in plant physiology and growth, K supplementation is often neglected by growers due to high cost and complexity with i ...
DOI:
10.1016/j.fcr.2016.03.010

18. Effect of row spacing on the yield of cotton cultivars

Author:
M.B. Jahedi; F. Vazin; M.R. Ramezani
Source:
Cercetari agronomice in Moldova 2013 v.46 no.4 pp. 31-38
ISSN:
2067-1865
Subject:
Gossypium hirsutum; bolls; cotton; cropping systems; cultivars; fiber quality; herbicide resistance; lint yield; production costs; row spacing; weed control
Abstract:
... Modern cotton (Gossypium hirsutum L.) cultivars with herbicide resistance have rejuvenated an interest in narrow row cotton production, primarily because of the reduction of weed control problems encountered in the past with narrow row systems. While the primary goal of narrow row cotton is to reduce production costs, an agronomic and physiological evaluation of this cropping system is also needed ...
DOI:
10.2478/v10298-012-0101-y

19. Effects of Deficit Drip Irrigation Ratios on Cotton (Gossypium hirsutum L.) Yield and Fibre Quality

Author:
Basal, H.; Dagdelen, N.; Unay, A.; Yilmaz, E.
Source:
Journal of agronomy and crop science 2009 v.195 no.1 pp. 19-29
ISSN:
0931-2250
Subject:
cotton; cultivars; plant available water; diameter; staple (fibers); Gossypium hirsutum; water use efficiency; microirrigation; deficit irrigation; irrigation rates; yield components; fiber quality; bolls; Turkey (country)
Abstract:
... Increasing irrigation costs and declining water availability compel producers to adapt irrigation strategies for maximum crop yield and water use efficiency. A field trial was conducted to observe the effects of various drip irrigation ratios (IR-0, IR-25, IR-50, IR-75 and IR-100) on water use efficiency (WUE), the irrigation water use efficiency (IWUE), lint yield, yield components and fibre qual ...
DOI:
10.1111/j.1439-037X.2008.00340.x

20. Effects of Irrigation, Cultivar, and Plant Density on Cotton Within-Boll Fiber Quality

Author:
Lu Feng; Vinicius B. Bufon; Cory I. Mills; Eric Hequet; James P. Bordovsky; Wayne Keeling; Randy Boman; Craig W. Bednarz
Source:
Agronomy journal 2011 v.103 no.2 pp. 297-303
ISSN:
0002-1962
Subject:
Gossypium hirsutum; advanced fiber information system; bolls; cotton; cultivars; fiber quality; field experimentation; fineness; fruiting; irrigation rates; manual harvesting; plant density; rain
Abstract:
... This study was designed to determine how within-boll fiber quality of cotton (Gossypium hirsutum L.) is affected through irrigation, cultivar, and plant density management. Field experiments were conducted in 2006 and 2007 using two contemporary cultivars, arranged in a split-split plot design with two irrigation rates (6.33 and 4.32 mm d⁻¹) as the main plot, plant density (79,071; 128,490; 197,67 ...
DOI:
10.2134/agronj2010.0185

21. Effects of chromosome 5sh from Gossypium barbadense L. on flower production in G. hirsutum L.

Author:
Jack C. McCarty; Jixiang Wu; Sukumar Saha; Johnie N. Jenkins; Russell Hayes
Source:
Euphytica 2006 v.152 no.1 pp. 99-107
ISSN:
0014-2336
Subject:
Gossypium barbadense; Southeastern United States; plant breeding; lint yield; hybrids; flowers; cultivars; chromosomes; bolls; additive effect; Gossypium hirsutum; cotton; substitution lines; chromosome substitution; flowering; additive gene effects; dominance (genetics)
Abstract:
... Cotton (Gossypium spp.) yield is directly determined by mature bolls that developed from squares and flowers. The first four to six weeks of flowering accounts for the majority of lint yield in upland cotton (G. hirsutum L.) for most cultivated areas of the southern USA cotton belt. In this study, we evaluated 13 cotton chromosome substitution lines (CS-B) and their chromosome specific-F₂ hybrids, ...
Handle:
10113/990
DOI:
10.1007/s10681-006-9183-7

22. Effects of ozone fumigation on cotton (Gossypium hirsutum L.) morphology, anatomy, physiology, yield and qualitative characteristics of fibers

Author:
Zouzoulas, Demetrius; Koutroubas, Spyridon D.; Vassiliou, George; Vardavakis, Emmanuel
Source:
Environmental and experimental botany 2009 v.67 no.1 pp. 293-303
ISSN:
0098-8472
Subject:
corolla; necrosis; crop yield; pollen; plant damage; stomatal conductance; Gossypium hirsutum; elevated atmospheric gases; chlorosis; photosynthesis; fiber quality; cultivars; chlorophyll; lint cotton; seeds; bracts; leaf area; ozone; lighting; seedling emergence; bolls; fumigation; trichomes; strength (mechanics); stomata; plant morphology
Abstract:
... This experiment was conducted to study the effect of high ozone concentrations on two cotton (Gossypium hirsutum L.) cultivars. Two cotton cultivars (Romanos and Allegria) were exposed to control (CF<4ppbO₃) and 100ppbO₃. Plant exposure to ozone began eight days after emergence and was interrupted one day before removing the leaves, to calculate the leaf area. Plants were exposed to ozone 7h/day, ...
DOI:
10.1016/j.envexpbot.2009.05.016

23. Effects of planting dates and shading on carbohydrate content, yield, and fiber quality in cotton with respect to fruiting positions

Author:
Wen-qing ZHAO; You WU; Zahoor Rizwan; You-hua WANG; Yi-na MA; Bing-lin CHEN; Ya-li MENG; Zhi-guo ZHOU
Source:
Journal of integrative agriculture 2018 v.17 no.5 pp. 1106-1119
ISSN:
2095-3119
Subject:
Gossypium hirsutum; bolls; carbohydrate content; cultivars; fiber quality; fruiting; leaves; light intensity; lint cotton; lint yield; planting date; shade; starch; sucrose; temperature; yield components
Abstract:
... Two cotton (Gossypium hirsutum L.) cultivars, Kemian 1 (cool temperature-tolerant) and Sumian 15 (cool temperature-sensitive) were used to study the effects of cool temperature on carbohydrates, yield, and fiber quality in cotton bolls located at different fruiting positions (FP). Cool temperatures were created using late planting and low light. The experiment was conducted in 2010 and 2011 using ...
DOI:
10.1016/S2095-3119(17)61797-0

24. Evaluation of Innovative Cotton Genotypes Against Insect Pest Prevalence, Fiber Trait, Economic Yield and Virus Incidence in Pakistan

Author:
H. Karar; M. Shahid; S. Ahamad
Source:
Cercetări agronomice în Moldova 2016 v.49 no.1 pp. 29-39
ISSN:
2067-1865
Subject:
Aleyrodidae; Gossypium hirsutum; Pectinophora gossypiella; bolls; breeding; buds; cotton; crop yield; cultivars; fiber quality; flowers; fruiting; genotype; germplasm; insect pests; instrumentation; leaves; manual harvesting; staple (fibers); viruses; Pakistan
Abstract:
... Cotton (Gossypium hirsutum) is known as important commodity globally. The experiment was conducted at Cotton Research Station, Multan, Punjab-Pakistan, to evaluate resistance of nine innovative cotton cultivars against insect pest complex were used along with their fiber traits, economic yield and virus incidence. Population of jassid, whitefly and thrips was recorded by using leaf turn method, bo ...
DOI:
10.1515/cerce-2016-0003

25. Evaluation of five most commonly grown cotton cultivars (Gossypium hirsutum L.) under mediterranean conditions: productivity and fibre quality

Author:
Avgoulas, C.; Bouza, L.; Koutrou, A.; Papadopoulou, S.; Kosmas, S.; Makridou, E.; Papastylianou, P.; Bilalis, D.
Source:
Journal of agronomy and crop science 2005 v.191 no.1 pp. 1-9
ISSN:
0931-2250
Subject:
cultivars; crop quality; staple (fibers); Gossypium hirsutum; strength (mechanics); crop yield; genotype-environment interaction; weather; bolls; seed cotton; Mediterranean climate; Greece
DOI:
10.1111/j.1439-037X.2004.00139.x

26. Exploring ethyl methanesulfonate (EMS) treated cotton (Gossypium hirsutum L.) to improve drought tolerance

Author:
Travis W. Witt; Mauricio Ulloa; Mathew G. Pelletier; Venugopal Mendu; Glen L. Ritchie
Source:
Euphytica 2018 v.214 no.7 pp. 123
ISSN:
0014-2336
Subject:
DNA; Gossypium hirsutum; agronomic traits; bolls; cotton; crops; cultivars; drought tolerance; ethyl methanesulfonate; fiber quality; fruiting; gene pool; genetic variation; irrigation rates; lint yield; models; mutagens; point mutation; rain; Texas
Abstract:
... The Texas High Plains often has extended periods between rainfall events, which can lead to a reduction in the yield and fiber quality of cotton (Gossypium hirsutum L.). It is known that cultivated cotton suffers from low levels of genetic diversity due to the over-use in breeding of similar gene pools, which may hinder breeding for drought tolerance. In this study, for the first time the novel va ...
DOI:
10.1007/s10681-018-2206-3

27. Fiber length development in near-long staple upland cotton

Author:
Braden, C.A.; Smith, C.W.
Source:
Crop science 2004 v.44 no.5 pp. 1553-1559
ISSN:
0011-183X
Subject:
cotton; weight; cultivars; flowering; staple (fibers); Gossypium hirsutum; fiber crops; crop yield; genotype; length; genetic variation; heritability; bolls; Texas
Abstract:
... Advanced Fiber Information System (AFIS) mean fiber length by weight (L(w)), fiber length development period (FLDP), and average daily fiber length growth rates (ADGR) were determined for four experimental strains and three cultivars of upland cotton, Gossypium hirsutum L., in 1998 and 1999 in College Station, TX. TAM 94L-25 and TAM 94M-14, near-long staple sib lines developed by the Texas Agricul ...

28. First Report of Sclerotinia Boll Rot and Stem Blight of Cotton in Arizona

Author:
J. Hu; U. Handique; E. R. Norton
Source:
Plant disease 2018 v.102 no.8 pp. 1663
ISSN:
0191-2917
Subject:
DNA primers; Gossypium hirsutum; Sclerotinia sclerotiorum; agar; ambient temperature; bolls; canopy; cotton; crop production; cultivars; culture media; fungi; highlands; host range; internal transcribed spacers; leaves; lettuce; mycelium; pathogenicity; pinto beans; polymerase chain reaction; relative humidity; ribosomal DNA; sclerotia; soil; stem blight; stems; streptomycin; wilting; Arizona
Abstract:
... Upland (Gossypium hirsutum L.) and Pima (G. barbadense L.) cotton are economically important throughout the southwestern United States. In August 2017, canopy wilting and boll rot symptoms were observed on upland cultivar Dyna-Gro 3109B2XF planted in Cochise County, Arizona. The affected field area was 8 ha with approximately 10% incidence of the disease. Limbs in proximity to the soil appeared to ...
DOI:
10.1094/PDIS-12-17-1897-PDN

29. Genetic Effects of Thirteen Gossypium barbadense L. Chromosome Substitution Lines in Topcrosses with Upland Cotton Cultivars: I. Yield and Yield Components

Author:
Johnie N. Jenkins; Jixiang Wu; Jack C. McCarty; Sukumar Saha; Osman Gutiérrez; Russell Hayes; David M. Stelly
Source:
Crop science 2006 v.46 no.3 pp. 1169-1178
ISSN:
0011-183X
Subject:
cotton; substitution lines; topcrossing; cultivars; alleles; chromosomes; wide hybridization; Gossypium hirsutum; Gossypium barbadense; chromosome substitution; fiber crops; dominance (genetics); yield components; additive gene effects; interspecific hybridization; fiber quality; bolls
Abstract:
... Gossypium barbadense L. line 3–79 is lower in yield, has smaller bolls and longer, finer, and stronger fibers than upland cotton G. hirsutum L. Thirteen chromosome substitution (CS-B) lines with individual 3–79 chromosomes or arms substituted into TM-1, G. hirsutum, were top crossed with five elite cultivars and additive and dominance effects for the yield components, lint percentage, boll weight, ...
Handle:
10113/2869
DOI:
10.2135/cropsci2005.08-0269

30. Genetic Variation for Yield and Fiber Quality Response to Supplemental Irrigation within the Pee Dee Upland Cotton Germplasm Collection

Author:
B. T. Campbell; P. J. Bauer
Source:
Crop science 2007 v.47 no.2 pp. 591-597
ISSN:
0011-183X
Subject:
Gossypium hirsutum; cotton; crop yield; genetic variation; fiber quality; irrigated farming; germplasm; plant genetic resources; cultivars; genotype; dryland farming; agronomic traits; bolls; weight; seed productivity; seeds; fiber content; length; genotype-environment interaction
Abstract:
... Water availability is a major factor influencing cotton cultivar performance and sustainable cotton (Gossypium hirsutum L.) production in the southeastern USA. An increased understanding of the response of diverse cotton germplasm lines to supplemental irrigation could aid in future efforts to develop cultivars targeted to irrigated or dryland environments. In this study, 13 germplasm lines were s ...
Handle:
10113/19064
DOI:
10.2135/cropsci2006.06.0424

31. Genetic association of cotton yield with its component traits in derived primitive accessions crossed by elite upland cultivars using the conditional ADAA genetic model

Author:
McCarty, Jack C.; Wu, Jixiang; Jenkins, Johnie N.
Source:
Euphytica 2008 v.161 no.3 pp. 337-352
ISSN:
0014-2336
Subject:
cultivars; plant breeding; lint cotton; Gossypium hirsutum; crossing; yield components; phenotypic variation; bolls; Mississippi
Abstract:
... Boll number, lint percentage, and boll weight are three component traits for lint yield of upland cotton, Gossypium hirsutum L. Selecting high yielding lines or hybrids depends on the ability to dissect the genetic relationship of lint yield with these component traits. In this study, 14 day-neutral lines with desirable fiber quality derived from primitive accessions were top crossed with five com ...
Handle:
10113/14258
DOI:
10.1007/s10681-007-9562-8

32. Heterotic Effects in Topcrosses of Modern and Obsolete Cotton Cultivars

Author:
B. T. Campbell; D. T. Bowman; D. B. Weaver
Source:
Crop science 2008 v.48 no.2 pp. 593-600
ISSN:
0011-183X
Subject:
cotton; topcrossing; cultivars; temporal variation; heterosis; Gossypium hirsutum; open pollination; additive gene effects; yield components; genetic variation; fiber quality; bolls; artificial selection
Abstract:
... Historically, reselection, pedigree, and mass-selection breeding methods have been used to develop open-pollinated cultivars of upland cotton (Gossypium hirsutum L.). As a result, modern cotton cultivars should have accumulated additive genetic effects with time, while also possessing fewer nonadditive gene effects than obsolete cultivars. A topcross test was conducted to compare the heterotic eff ...
Handle:
10113/17572
DOI:
10.2135/cropsci2007.06.0362

33. In vitro induction of mutation in cotton (Gossypium hirsutum L.) and isolation of mutants with improved yield and fiber characters

Author:
Annamalai Muthusamy; Narayanasamy Jayabalan
Source:
Acta physiologiae plantarum 2011 v.33 no.5 pp. 1793-1801
ISSN:
0137-5881
Subject:
Gossypium hirsutum; bolls; cellulose; cotton; cultivars; field experimentation; flowering; gamma radiation; genetic variation; harvest index; mutants; mutation; ovules; seeds
Abstract:
... This paper describes a protocol to develop cotton mutant lines with improved yield and fiber characters. Immature ovules [(15-day post-anthesis ovules (dap)] were irradiated with 10–50 Gy gamma rays and treated with 1–5 mM EMS and SA to investigate the stimulatory effects of mutagenic treatments. During the subsequent field trials, the mutant lines showed significant variations from control ...
DOI:
10.1007/s11738-011-0718-8

34. Multiple Irrigation Levels Affect Boll Distribution, Yield, and Fiber Micronaire in Cotton

Author:
Chase Snowden; Glen Ritchie; Justin Cave; Wayne Keeling; Nithya Rajan
Source:
Agronomy journal 2013 v.105 no.6 pp. 1536-1544
ISSN:
0002-1962
Subject:
Gossypium hirsutum; bolls; branches; cotton; cultivars; drought; fruiting; heat; irrigation rates; micronaire; High Plains (United States); Texas
Abstract:
... The boll distribution characteristics of upland cotton (Gossypium hirsutum L.) cultivars are related to cotton maturity and can interact with environment and management practices to determine yield and fiber quality. The boll distributions of six cotton cultivars under four irrigation levels were compared in 2011 and 2012 on the Texas High Plains. In 2011, a year of severe drought and heat, all cu ...
DOI:
10.2134/agronj2013.0084

35. Mutation of SELF-PRUNING homologs in cotton promotes short-branching plant architecture

Author:
Zhanfeng Si; Hui Liu; Jiankun Zhu; Jiedan Chen; Qiong Wang; Lei Fang; Fengkai Gao; Yue Tian; Yali Chen; Lijing Chang; Bingliang Liu; Zegang Han; Baoliang Zhou; Yan Hu; Xianzhong Huang; Tianzhen Zhang
Source:
Journal of experimental botany 2018 v.69 no.10 pp. 2543-2553
ISSN:
1460-2431
Subject:
Gossypium barbadense; Gossypium hirsutum; alleles; bolls; branches; branching; cotton; crop production; cultivars; flowering; fruiting; loci; molecular cloning; mutants; phenotype; plant architecture; plant density; planting density; point mutation; tetraploidy; tomatoes
Abstract:
... In cotton, the formation of fruiting branches affects both plant architecture and fiber yield. Here, we report map-based cloning of the axillary flowering mutation gene (GbAF) that causes bolls to be borne directly on the main plant stem in Gossypium barbadense, and of the clustered boll mutation gene (cl₁) in G. hirsutum. Both mutant alleles were found to represent point mutations at the Cl₁ locu ...
DOI:
10.1093/jxb/ery093
PubMed:
29547987
PubMed Central:
PMC5920339

36. Nondestructive Method for the Determination of Boll Surface Area in Cotton

Author:
B. L. McMichael; C. D. Elmore; G. W. Cathey
Source:
Agronomy journal 1976 v.68 no.2 pp. 426-427
ISSN:
0002-1962
Subject:
Gossypium hirsutum; bolls; cotton; cultivars; equations; greenhouses; nondestructive methods; regression analysis; surface area; transpiration
Abstract:
... Fruit (boll) transpiration rates in cotton (Gossypium hirsutum L.) may be important in boll growth and movement of materials into developing bolls. Therefore to facilitate comparisons of transpiration rates of different age (and size) bolls, a nondestructive method for the estimation of cotton boll surface areas was evaluated using two commercial cultivars grown in the greenhouse. Boll length was ...
DOI:
10.2134/agronj1976.00021962006800020058x

37. Optimizing Timing of Chemical Harvest Aid Application in Cotton by Predicting Its Influence on Fiber Quality

Author:
Michael P. Bange; Robert L. Long
Source:
Agronomy journal 2011 v.103 no.2 pp. 390-395
ISSN:
0002-1962
Subject:
Gossypium hirsutum; bolls; color; cotton; cultivars; cutting; field experimentation; harvest date; micronaire; prediction; testa
Abstract:
... To optimize yield and fiber quality, boll cutting is used by cotton (Gossypium hirsutum L.) managers to determine when crops are mature and ready for chemical harvest aid application. While it is accepted that the maturity of bolls is defined using seed coat color, we found no investigations of this definition on overall crop fiber quality. Three field experiments were undertaken in different seas ...
DOI:
10.2134/agronj2010.0293

38. Phenological and morphological components of cotton crop maturity

Author:
Bednarz, C.W.; Nichols, R.L.
Source:
Crop science 2005 v.45 no.4 pp. 1497-1503
ISSN:
1435-0653
Subject:
cotton; cultivars; flowering; Gossypium hirsutum; phenology; fruiting; fiber crops; crop yield; dry matter partitioning; maturity groups; stem nodes; plant morphology; bolls; Georgia
Abstract:
... Full season cotton (Gossypium hirsutum L.) cultivars may be better adapted to the lower southeastern USA because early maturing cultivars may not recover from the many episodic drought events that annually plague the region. The objective of this investigation was to determine if cotton maturity may be defined on the basis of flowering interval, boll maturation period, or whole plant yield distrib ...

39. Pink bollworm (Lepidoptera: Gelechiidae): oviposition and larval success on resistant and susceptible cotton plants

Author:
Wilson, F.D.; George, B.W.; Szaro, J.L.
Source:
Journal of economic entomology 1984 v.77 no.3 pp. 709-714
ISSN:
0022-0493
Subject:
Gossypium hirsutum; Pectinophora gossypiella; antibiosis; bolls; branches; breeding stock; cotton; cultivars; eggs; field experimentation; flowers; greenhouse experimentation; greenhouses; insecticides; larvae; larval development; leaves; oviposition; pest resistance
Abstract:
... Oviposition and larval development of pink boll worm (PBW), Pectinophora Gossypiella (Saunders), on a breeding stock of upland cotton, Gossypium hirsutum L., designated AET-5, was compared to that on a commercial cultivar, 'Deltapine 61' (DPL-61), in greenhouse no-choice and free-choice tests, and in field free-choice tests. The field resistance of AET-5 was caused mainly by lower PBW oviposition. ...
Handle:
10113/54663
DOI:
10.1093/jee/77.3.709

40. Plant Density Modifications of Cotton Within-Boll Yield Components

Author:
Craig W. Bednarz; Robert L. Nichols; Steve M. Brown
Source:
Crop science 2006 v.46 no.5 pp. 2076-2080
ISSN:
0011-183X
Subject:
cotton; cultivars; seeds; surface area; Gossypium hirsutum; plant density; seed productivity; yield components; mass; crop management; fiber quality; bolls
Abstract:
... One approach to improving cotton (Gossypium hirsutum L.) yield and quality is to identify crop management practices that may exploit the most basic (i.e., within-boll) yield components. One of the parameters that may influence within-boll yield components is plant density. Thus, the objectives of this investigation were to determine how yield components in cotton are altered through plant density ...
DOI:
10.2135/cropsci2005.12.0493

41. Quantitative trait loci controlling plant architectural traits in cotton

Author:
Song, Xianliang; Zhang, Tianzhen
Source:
Plant science 2009 v.177 no.4 pp. 317-323
ISSN:
0168-9452
Subject:
height; crop yield; genetic markers; quantitative trait loci; backcrossing; hybrids; Gossypium hirsutum; genotype; phenotypic variation; fiber quality; cultivars; epistasis; genotype-environment interaction; branches; bolls; cotton; plant architecture; internodes; Gossypium barbadense; environmental factors; agronomic traits; linkage (genetics)
Abstract:
... Cotton plant architecture is an important characteristic influencing the suitability of specific cotton varieties in cultivation, fiber yield and quality. However, complex multigenic relationships and substantial genotype-environment interaction underlie plant architecture, and will hinder the efficient improvement of these traits in conventional cotton breeding programs. An enhanced understanding ...
DOI:
10.1016/j.plantsci.2009.05.015

42. Response of Leaf Area Index, Vegetative and Reproductive Phases of Two Cotton (Gossypium Hirsutum L.) Cultivars at Different Regimes of Irrigation Scheduling

Author:
A. Ali; T. Khalik; A. Ahmad
Source:
Cercetări agronomice în Moldova 2014 v.47 no.1 pp. 31-37
ISSN:
2067-1865
Subject:
Gossypium hirsutum; bolls; branches; cotton; cultivars; flowers; irrigation scheduling; leaf area index
Abstract:
... The experiment was conducted to investigate the effects of different regimes of irrigation schedule on various vegetative and reproductive stages of cotton crop. The results showed that irrigation effect was non significant for number of plants m-2, while I₄ treatment produced maximum number of monopodial branches 2.18, but statistically it was at par with I₃, I₅. I₄ treatment showed maximum numbe ...
DOI:
10.2478/cerce-2014-0004

43. Response of late-planted cotton to the application of a growth regulator (chlorocholine chloride, Cycocel 75)

Author:
Mondino, M.H.; Peterlin, O.A.; Garay, F.
Source:
Experimental agriculture 2004 v.40 no.3 pp. 381-387
ISSN:
0014-4797
Subject:
planting date; cultivars; plant growth; Gossypium hirsutum; plant growth substances; air temperature; chlorides; dry matter accumulation; height; bolls; growing season; harvest index; stem nodes; fiber quality; spraying; seed cotton; Argentina
Abstract:
... The influence of a growth regulator, chlorocholine chloride (commercial name Cycocel 75) on plant growth, (yield) and quality of late-seeded (mid-December) cotton (Gossypium hirsutum) was studied in the Rio Dulce Irrigation Area, northwest Argentina, during three growth cycles (1998-2001). Cycocel 75 reduced plant height and node number as well as the total production of aerial biomass, thus incre ...
DOI:
10.1017/S0014479704002017

44. Single and Multiple In-Season Measurements as Indicators of At-Harvest Cotton Boll Damage Caused by Verde Plant Bug (Hemiptera: Miridae)

Author:
Brewer Michael J.; Armstrong J. Scott; Parker Roy D.
Source:
Journal of economic entomology 2013 v.106 no.3 pp. 1310-1316
ISSN:
0022-0493
Subject:
Creontiades; Gossypium hirsutum; bolls; cotton; cultivars; insects; models; pest monitoring; plant damage; plant response; regression analysis; Texas
Abstract:
... The ability to monitor verde plant bug, Creontiades signatus Distant (Hemiptera: Miridae), and the progression of cotton, Gossypium hirsutum L., boll responses to feeding and associated cotton boll rot provided opportunity to assess if single in-season measurements had value in evaluating at-harvest damage to bolls and if multiple in-season measurements enhanced their combined use. One in-season v ...

45. Spurred anoda (Anoda cristata) interference in wide row and ultra narrow row cotton

Author:
Molin William T.; Boykin Debbie; Hugie Josie A.; Ratnayaka H. Harish; Sterling Tracy M.
Source:
Weed science 2006 v.54 no.4 pp. 651-657
ISSN:
0043-1745
Subject:
weight; cultivars; Gossypium hirsutum; row spacing; Gossypium barbadense; dry matter accumulation; field experimentation; plant density; crop yield; mortality; crop-weed competition; width; branches; bolls; seed cotton; Anoda cristata; Mississippi
Abstract:
... A field experiment was conducted in 2000, 2001, and 2002 at Stoneville, MS, to determine the effect of spurred anoda interference on yield loss of two cotton cultivars, ‘‘Delta Pine 5415’’ and ‘‘Pima S-6’’, grown under wide (1 m) (WR) and ultra narrow (0.25 m) row (UNR) spacings. The relationship between spurred anoda density and dry weight per plot was linear each year. At a spurred anoda density ...
Handle:
10113/2139
DOI:
10.1614/WS-05-072R1.1

46. Sucrose metabolism in cotton (Gossypium hirsutum L.) fibre under low temperature during fibre development

Author:
Shu, Hongmei; Zhou, Zhiguo; Xu, Naiyin; Wang, Youhua; Zheng, Mi
Source:
European journal of agronomy 2009 v.31 no.2 pp. 61-68
ISSN:
1161-0301
Subject:
cotton; carbohydrate metabolism; cultivars; sowing date; flowering; sucrose-phosphate synthase; Gossypium hirsutum; sucrose; air temperature; cold stress; phenology; cellulose; biochemical pathways; beta-fructofuranosidase; enzyme activity; bolls; sucrose synthase; China
Abstract:
... The effects of low temperature on sucrose content and activities of key enzymes related to sucrose metabolism in cotton (Gossypium hirsutum L.) fibre were investigated. Two cotton cultivars, Kemian 1 and Sumian 15, were grown in the field at two sowing dates in 2006 and three sowing dates in 2007, the differences of environmental conditions during fibre development period (from flowering date to b ...
DOI:
10.1016/j.eja.2009.03.004

47. Temperature-mediated developmental delay may limit yield of cotton in relay intercrops with wheat

Author:
Zhang, L.; van der Werf, W.; Zhang, S.; Li, B.; Spiertz, J.H.J.
Source:
Field crops research 2008 v.106 no.3 pp. 258-268
ISSN:
0378-4290
Subject:
sowing date; soil temperature; seedlings; wheat; plant competition; field experimentation; Gossypium hirsutum; fruit set; Triticum aestivum; straw mulches; relay cropping; cultivars; air temperature; crop rotation; bolls; cotton; plastic film; canopy; heat sums; lint yield; China
Abstract:
... In the Yellow River valley of China, more then 1.4millionha of cotton are grown as relay intercrops with wheat. Cotton is sown in April when winter wheat is already in the reproductive phase; thus, a wheat crop with a fully developed canopy will compete for resources with cotton plants in the seedling stage. Yields of cotton are lower in relay intercropping systems than in a monocrop, but the aggr ...
DOI:
10.1016/j.fcr.2007.12.010

48. Timing Late-season Fruiting Termination of Cotton with Potassium 3,4-Dichloroisothiazole-5-Carboxylate

Author:
D. L. Kittock; H. Fred Arle; T. J. Henneberry; L. A. Bariola; V. T. Walhood
Source:
Crop science 1980 v.20 no.3 pp. 330-333
ISSN:
0011-183X
Subject:
cotton; harvest date; Pectinophora gossypiella; application timing; cultivars; flowering; Gossypium hirsutum; plant growth substances; Gossypium barbadense; fruit set; potassium; immatures; bolls; insect control; Arizona; California
Abstract:
... A plant growth regulator, Pennwalt TD-1123³ (3,4- dichlorolsothiazole-5-carboxylic acid) was evaluated as a chemical termination agent for reducing fruit set on cotton (Gossyplum spp.) in 32 tests in Arizona and California from 1974 through 1977. A reduction in immature bolls through chemical termination causes a similar reduction in diapausing pink bollworms [Pectinophora gossypiella (Saunders)]. ...
Handle:
10113/54623
DOI:
10.2135/cropsci1980.0011183X002000030010x

49. Yield, Boll Distribution and Fibre Quality of Hybrid Cotton (Gossypium hirsutum L.) as influenced by Organic and Modern Methods of Cultivation

Author:
Blaise, D.
Source:
Journal of agronomy and crop science 2006 v.192 no.4 pp. 248-256
ISSN:
0931-2250
Subject:
Gossypium hirsutum; cotton; fiber crops; crop yield; fiber quality; hybrids; cultivars; organic production; dryland farming; insecticides; pesticide application; insect control; diameter; soil organic matter; soil aggregates; insect pests; plant pests; bolls; branches; stem nodes; planting date; India
Abstract:
... India is the largest cotton-growing country (8.9 million hectares) in the world and most of the area is rain-dependent. Large amount of pesticides are used for the control of sucking pests and lepidopterans. Increasing demand for clean organic fibre has led to an interest in organic cotton. However, information on the effects of organic cultivation on fibre quality is limited. Seed cotton yield an ...
DOI:
10.1111/j.1439-037X.2006.00218.x

50. The impact of introducing the Bacillus thuringiensis gene into cotton on boll nitrogen metabolism

Author:
Zhang, X.; Zhang, L.; Ye, G.; Wang, Y.; Chen, Y.; Chen, D.
Source:
Environmental and experimental botany 2007 v.61 no.2 pp. 175-180
ISSN:
0098-8472
Subject:
Gossypium hirsutum; cotton; Bacillus thuringiensis; transgenic plants; plant-incorporated protectants; nitrogen metabolism; bolls; plant growth; cultivars; hybrids; nitrogen content; free amino acids; protein content; flowering; phenology; enzyme activity; alanine transaminase; aspartate transaminase; proteinases; China
Abstract:
... Changes in vegetative and reproductive growth have been widely observed in Bacillus thuringiensis (Bt) transgenic cotton. The objective of this study was to investigate the characteristics of boll nitrogen metabolism of Bt cotton cultivars to gain a better physiological understanding of the observed phenomenon. The study was undertaken on two Bt transgenic cotton cultivars and their parents, one c ...
DOI:
10.1016/j.envexpbot.2007.05.008