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Physalis angulata; Physalis peruviana; Physalis philadelphica; agronomic traits; breeding programs; chemical constituents of plants; early development; fruits; functional foods; genotype; germination; ingredients; models; multivariate analysis; nutrition; tomatoes; Mexico
Abstract:
... Some species of Physalis develop fruits that are appreciated as fruit and as culinary ingredients. Only Physalis peruviana and Physalis philadelphica are grown on a larger scale in America. Physalis angulata is grown on a small scale in Jalisco, Mexico. It is a wild species with extensive cultivation potential in tropical areas and a model of wide interest due to its phytochemical, pharmacological ...
Neymar Camposeco-Montejo; Antonio Flores-Naveda; Norma Ruiz-Torres; Perpetuo Álvarez-Vázquez; Guillermo Niño-Medina; Xochitl Ruelas-Chacón; María Alejandra Torres-Tapia; Pablo Rodríguez-Salinas; Victor Villanueva-Coronado; Josué I. García-López
... The genetic improvement program of the Seed Technology Training and Development Center works on the agronomic characterization and the content of bioactive compounds in eight genotypes of habanero pepper. The objective is to select genotypes with good agronomic performance that allow the generation of inbred lines to obtain hybrids. In this study, the agronomic performance and the content of bioac ...
... Wild relatives of wheat (Triticum aestivum L.) have primarily been used as sources of genes for biotic and abiotic stress resistance. A more direct approach to grain yield improvement has been sought by using exotic germplasm to enhance quantitative traits, including grain yield. This study was conducted to determine whether synthetic hexaploids, developed from artificial hybridization of durum wh ...
Cucurbita moschata; Research and Education Center for Tropical Agriculture; agronomic traits; gels; genetic variation; germplasm; haplotypes; heterozygosity; polymerase chain reaction; single-stranded conformational polymorphism; squashes; Colombia; Costa Rica; Guatemala; Mexico; Nicaragua; Panama; Peru; Russia
Abstract:
... The aim of this research was the genetic characterization of 218 accessions of Cucurbita moschata Duchesne, a squash, and its relationship with morphological characteristics of agronomic interest, which are part of the international collection conserved at Tropical Agricultural Research and Higher Education Center (CATIE), Costa Rica. The majority of the accessions came from Mexico and Central Ame ...
Víctor Pecina-Quintero; José Luis Anaya-López; Carlos Alberto Núñez-Colín; Alfredo Zamarripa-Colmenero; Noé Montes-García; José Luis Solís-Bonilla; María Rocío Aguilar-Rangel
... Due to the chemical and physical properties of castor oil (Ricinus communis) that make it a valuable raw material for numerous industrial applications, including the production of biofuel, interest to develop more and better varieties has been increased. However, despite this interest, México does not currently have any varieties of enhanced castor for which yield and adaptation have been optimize ...
... Moisture stress greatly limits the productivity of wheat in many wheat-growing regions of the world. Knowledge of the degree of genetic diversity among parental materials for key selection traits will facilitate the development of high yielding, stress tolerant wheat cultivars. The objectives of this study were to: (i) use amplified fragment length polymorphisms (AFLPs) to assess genetic diversity ...
... Cluster analysis is commonly used for studying genetic diversity. Problems with hierarchical cluster analysis include how to combine different types of variables (discrete and continuous), choosing distance measurements, applying an appropriate clustering strategy, designating the optimal number of clusters, and identifying variables with significant discriminatory power. Hierarchical clustering m ...
... Conservation agriculture (CA) is an agronomic management system based on zero tillage and residue retention. Due to its potential for climate change adaptation through the reduction of soil erosion and improved water availability, CA is becoming more important in many regions of the world. However, increased bulk density and large amounts of crop residues may be a constraint for early plant establ ...
... Rye (Secale cereale L., 2n=2x=14, RR) is regarded as a significant genetic resource for improving common wheat because of its resistance to multiple diseases and abiotic-stress tolerant traits. The 1RS chromosome from the German cultivated rye variety Petkus is very important in wheat breeding, but its weakened disease resistance demands the identification of new resources. In the present study, a ...
... This study analyzes the regional diversity of common beans (Phaseolus vulgaris, Fabaceae) in Aguascalientes, Mexico, in relation to local physical, biological, cultural, and socioeconomic factors. A close direct relationship between bean diversity and the physical and biological factors and a close inverse relationship between bean diversity and the cultural and socioeconomic factors was found. Gr ...
spring wheat; photoperiodism; agronomic traits; protein composition; genotype; Minnesota; Mexico
Abstract:
... Daylength insensitivity is an advantageous trait for spring wheat (Triticura aestivum L.) since it allows both a better seed increase from the nurseries in southern latitudes and wider potential use in breeding programs around the world. The ‘Chris’ source of daylength insensitivity was evaluated in the upper Midwest to determine if this trait had adverse effects on agronomic performance. Sixty ra ...
... Leaf rust, caused by Puccinia recondita Roberge ex Desmaz. f. sp. tritici, is an important disease of wheat (Triticum aestivum L.) worldwide. The Lr34 gene is known to confer durable resistance. We evaluated the effect of Lr34 on grain yield and other traits in the absence and presence of leaf rust. ‘Jupateco 73R’ and ‘Jupateco 73S’ (near-isogenic reselections from the Mexican spring wheat cultiva ...
... Leaf rust, caused by Puccinia triticina, is an important disease of durum wheat (Triticum turgidum) in many countries. We compared the effectiveness of different types of resistance in International Maize and Wheat Improvement Center-derived durum wheat germ plasm for protecting grain yield and yield traits. In all, 10 durum wheat lines with race-specific resistance, 18 with slow-rusting resistanc ...
... Gamma irradiation of Capsicum seeds is useful for inducing heritable mutations for breeding or for generating research material for heritability studies on agronomic traits. This study evaluated the effects of gamma-irradiated seeds on germination and plant development in a native cultivar of landrace 'Chile de Agua' (C. annuum L.) that was donated by a farmer in Oaxaca, Mexico. The seed lots were ...
... Core subsets of germplasm collections facilitate their evaluation and use. Field evaluations were conducted to develop a core subset of Caribbean maize (Zea mays L.) accessions from the CIMMYT maize germplasm bank. Most accessions were from the West Indies and others were from Central and South America. The accessions were divided into two trials of 249 accessions and seven common checks that were ...
... Broadening the genetic base for resistance to Russian wheat aphid, Diuraphis noxia (Mordvilko) (Homoptera: Aphididae), in bread wheat, Triticum aestivum L., is desirable. To date, identified Russian wheat aphid resistance genes are either located to the D chromosomes or to rye translocation of wheat, and resistance derived from the A or B genomes of tetraploid Triticum spp. would therefore be high ...
Weber, Allison L.; Briggs, William H.; Rucker, Jesse; Baltazar, Baltazar M.; Sánchez-Gonzalez, José de Jesús; Feng, Ping; Buckler, Edward S.; Doebley, John
... Previous association analyses showed that variation at major regulatory genes contributes to standing variation for complex traits in Balsas teosinte, the progenitor of maize. This study expands our previous association mapping effort in teosinte by testing 123 markers in 52 candidate genes for association with 31 traits in a population of 817 individuals. Thirty-three significant associations for ...
cultivars; landraces; enzyme polymorphism; multivariate analysis; Phaseolus vulgaris; agronomic traits; phaseolin; disease resistance; genetic variation; allozymes; plant morphology; Mexico; Central America; South America
Abstract:
... Knowledge of patterns of genetic diversity enhances the efficiency of germplasm conservation and improvement. This study examined the organization of diversity for morphological and agronomic characteristics in 306 landraces of cultivated common bean (Phaseolus vulgaris L.) from Latin America and its relationship with phaseolin seed protein and allozyme diversity of the landraces. Data on pigmenta ...
... Heterotic groups and patterns are of fundamental importance in hybrid breeding of maize (Zea mays L.). The major goal of this study was to investigate the relationship between heterosis and genetic distance determined with simple sequence repeat (SSR) markers. The objectives of our research were to (i) compare the genetic diversity within and between seven tropical maize populations, (ii) test alt ...