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Accueil du site → Master → Etats Unis → 1993 → Genetic selection of hyacinth bean (Lablab purpureus (L.) Sweet) genotypes for yield and tolerance to abiotic stress under semi-arid environments

Texas A&M University - Kingsville (1993)

Genetic selection of hyacinth bean (Lablab purpureus (L.) Sweet) genotypes for yield and tolerance to abiotic stress under semi-arid environments

Rovelo-Traslosheros, Claudia Marcela

Titre : Genetic selection of hyacinth bean (Lablab purpureus (L.) Sweet) genotypes for yield and tolerance to abiotic stress under semi-arid environments

Auteur : Rovelo-Traslosheros, Claudia Marcela

Université de soutenance : Texas A&M University - Kingsville

Grade : Master of Science (MS) 1993

Résumé
Hyacinth bean has shown potential for establishment in south Texas. The plant was studied to identify adaptable, high seed- and forage-producing genotypes. In 1991, 58 genotypes were evaluated and 19 produced flowers, pods and seeds. In 1992, 15 seed-producing genotypes and two cultivars were evaluated for forage and seed production. Significant (P $<$ 0.01) differences were found among the genotypes for all variables measured. The effects of soil moisture stress (SMS) on hyacinth bean productivity were evaluated in a greenhouse study. SMS treatments significantly (P $<$ 0.05) affected dry matter partitioning, leaf area, stem diameter and root/stem ratio. Cellular responses of six genotypes to low and high temperature stress were evaluated. There were significant (P $<$ 0.01) differences in responses to the temperature treatments. The SDS-PAGE of protein extracted during low temperature stress revealed differences in protein synthesis between cold-tolerant and cold-sensitive genotypes. The results indicate presence of genetic variability among hyacinth bean genotypes and potential for cultivar development.

Mots clés : Agronomy, Plant propagation, Biological sciences, Botany

Accès au document : Proquest Dissertations & Theses

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