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cultivars; flowers; frost injury; fruit set; fruits; heritability; open pollination; peaches; risk
Abstract:
... Factors affecting productivity in peach, such as flower density, initial and final fruit set by open pollination, and yield per m length of shoot were studied in 40 cultivars during a three-year period. Significant differences among cultivars were found for all studied properties. The coefficients of variability were the lowest for initial fruit set and then for final fruit set and flower density; ...
... The 15N natural abundance technique is one of those most easily applied ‘on farm’ to evaluate the contribution of biological N2 fixation (BNF) to legume crops. When proportional BNF inputs are high, the accuracy of this technique is highly dependent on an accurate estimate of the 15N abundance of the N derived from N2 fixation (the ‘B’ value). The objective of this study was to determine the influ ...
... This study reports for the first time the metabolic profile of cocoa (Theobroma cacao L.) beans using the 1H NMR technique applied to polar extracts of fermented cocoa beans. The simultaneous detection and quantification of amino acids, polyalcohols, organic acids, sugars, methylxanthines, catechins, and phenols were obtained by assigning the major signals of the spectra for different varieties of ...
... Despite increasing knowledge of 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (DIMBOA) and 6-methoxy-benzoxazolin-2-one (MBOA) as allelochemicals involved in the defense of wheat against pests, relatively little is known about their levels in the rhizosphere and interactions with the soil microbial community. This study quantified DIMBOA and MBOA in the wheat rhizosphere and analyzed the soil micro ...
cultivars; sweet peppers; detection limit; biosynthesis; grapes; monitoring; small fruits; total soluble solids; headspace analysis; vines; fruit maturity; grape juice; genotype; pH; Vitis vinifera; odors
Abstract:
... 2-Methoxy-3-isobutylpyrazine (MIBP) contributes a bell pepper aroma to many grape cultivars and has a reported aroma threshold of 2 ng L−1 in water. The purpose of this study was twofold: (1) develop a procedure using headspace solid phase micro-extraction combined with GC–MS in the selected ion monitoring mode (HS-SPME-GC–MS-SIM) for analysis of MIBP in grape berries, and (2) determine the locati ...
Tropaeolum tuberosum; botanical illustration; cultivars
Abstract:
... Tropaeolum tuberosum Ruiz & Pav. (Tropaeolaceae) and its two subspecies, subsp. tuberosum and subsp. silvestre Sparre are described and illustrated, and their cultivation and propagation discussed. The origin of the cultivar 'Sidney' is noted. ...
... The plant hormone ethylene has been reported to inhibit the Agrobacterium tumefaciens-mediated transformation efficiency of many plants. In this study, an acdS gene that encodes 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase, an enzyme that breaks down ACC, the direct precursor of ethylene biosynthesis in all higher plants, was introduced into A. tumefaciens GV3101:pMP90. It was found that ...
... Species within the genus Hibiscus (Malvaceae) are herbaceous or woody plants, annuals or perennials. Within the genus, most of the domesticated species are grown as ornamentals, and the most widely exploited is Hibiscus rosa-sinensis, which is particularly variable with respect to flower colour and shape. H. rosa-sinensis is thought to have originated following hybridization between two species co ...
Prunus persica; amplified fragment length polymorphism; biotechnology; chromosome mapping; cultivars; fruit quality; fruiting; genetic variation; heterozygosity; horticulture; inbreeding; nectarines; peaches; progeny; ripening; texture; trees
Abstract:
... Flesh texture is an important quality trait in peach, affecting both fruit firmness and the ripening process. An interesting variation, “slow ripening” (SR), described in some progeny from ‘Fantasia’ nectarine, interferes with the completion of ripening. In these plants, fruit development appears to cease before the end of the cell expansion phase. The SR process was studied at the genetic level u ...
... Nitrogen harvest index - NHI is a measure of efficiency of nitrogen translocation from vegetative organs to grain. The goal of this paper is to investigate variability and stability of nitrogen harvest index of twelve bread wheat genotypes, on three nitrogen levels. ANOVA showed that nitrogen harvest index was mostly under influence of the year x genotype interaction, year of investigation and gen ...
... The source-sink relations (SSR) in a plant under cold exposure to frost was studied in the plants of winter wheat (Triticum aestivum L.) Mironovskaya 808 cultivar and its allocytoplasmic hybrid containing alien cytoplasm of goat grass (Aegilops ovata L.) and grown in a water culture until phas of two leaves. The alteration of SSR was processed by treatment of plant with solutions of the photosynth ...
branches; cultivars; drought; drought tolerance; harvest index; irrigated farming; irrigation; leaf area index; leaves; parents; potatoes; water treatment
Abstract:
... To improve drought tolerance of potato, we bred four cultivars with large root mass and registered them as Konyu-1 to Konyu-4 in 2007. In this paper, we present the yield performance and the related aboveground characteristics of three Konyu cultivars and cv. Konafubuki (small root mass, one of the parents of these Konyu cultivars) in irrigated and droughted fields for 3 years. Consistent with our ...
... Simple sequence repeat (SSR) genetic markers, also referred to as microsatellites, function in map-based cloning and for marker-assisted selection in plant breeding. The objectives of this study were to determine the abundance of SSRs in the soybean genome and to develop and test soybean SSR markers to create a database of locus-specific markers with a high likelihood of polymorphism. A total of 2 ...
... In terrestrial ecosystems, the majority of soil N is present in organic macromolecules like proteins, nucleic acids and chitin. Because these compounds cannot be assimilated by plants, plant growth is often N-limited. Therefore, the hydrolysis of proteins and chitin is particularly important in making N available for plants. In this study, we investigated the influence of different potato cultivar ...
... A comparative examination of cysteine proteinases in winter wheat (Triticum aestivum L.) seedlings differing in sensitivity to frost and drought revealed many similarities and differences in response to water deprivation. Azocaseinolytic activity was enhanced under water deficiency, but the enhancement was significantly lower in the tolerant genotype (Kobra cultivar). On the contrary, acclimation ...
cultivars; frost resistance; overwintering; plant growth; protein content; spring; temperature; wheat; wheat protein
Abstract:
... With 4 figures and 1 table ABSTRACT: We studied how temperature treatments, at 9°C or 17°C during plant growth under controlled conditions, affected the accumulation of the cold‐regulated dehydrin WCS120 in 21 wheat cultivars which had different winter survival rates. Cultivar survival was established using the provocation pot method over three winters. The levels of WCS120 were determined by immu ...
... Phosphorus (P) is one of the major factors worldwide limiting crop growth. Enhancing P efficiency in plants can be achieved through improving P acquisition, utilization, or both. Which of these approaches is more critical for enhancing P efficiency in crops, particularly in intensive cropping systems? P availability is unevenly distributed through the soil profile. Most modern crop cultivars are s ...
... This work was carried out to characterize starch accumulation and activities of key enzymes during grain filling in two wheat cultivars differing in starch content. The results showed that the starch accumulation rate (SAR) and activities of sucrose synthase, ADP-glucose pyrophosphorylase, soluble starch synthase, granule-bound starch synthase, and starch branching enzyme in the cultivar with a hi ...