Adaptation to heat and drought stresses in snap bean (Phaseolus vulgaris) during the reproductive stage of development

We screened snap bean (Phaseolus vulgaris L.) germplasm for heat and drought tolerance during the reprodudtive stage under extremely hot conditions as well as in the winter seasons in closed net houses to raise the temperatures under field conditions, a practice usually followed by vegetable growers...

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Bibliographic Details
Published in:JARQ. Japan agricultural research quarterly 2006, Vol.40(3), pp.213-216
Main Authors: Kumar, A.(CCS Haryana Agricultural Univ., Hisar (India)), Omae, H, Egawa, Y, Kashiwaba, K, Shono, M
Format: Article
Language:English
Subjects:
CRECIMIENTO
CROISSANCE
DISTANCE GENETIQUE
DISTANCIA GENETICA
DROUGHT STRESS
ESTRES DE SEQUIA
ESTRES TERMICO
ETAPAS DE DESARROLLO DE LA PLANTA
FOTOSINTESIS
GENETIC DISTANCE
GROWTH
HEAT STRESS
IRRIGATION
PHASEOLUS VULGARIS
phenology
PHOTOSYNTHESE
PHOTOSYNTHESIS
photosynthetic parameters
PLANT DEVELOPMENTAL STAGES
plant water relations
REPRODUCCION
REPRODUCTION
RIEGO
shoot growth
STADE DE DEVELOPPEMENT VEGETAL
STRESS DU A LA SECHERESSE
STRESS THERMIQUE
VARIEDADES
VARIETE
VARIETIES
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Summary:We screened snap bean (Phaseolus vulgaris L.) germplasm for heat and drought tolerance during the reprodudtive stage under extremely hot conditions as well as in the winter seasons in closed net houses to raise the temperatures under field conditions, a practice usually followed by vegetable growers. Substantial genotypic differences were found in morpho-physiological characteristics like phenology, plant water relations, photosynthetic parameters and shoot growth, which were related to the reproductive responses. The associations of days to podding and leaf water content with the number of pods per plant and seed yield were consistent across the different environments and experiments. The leaf water content was maintained by reductions in leaf water potential and shoot extension in response to heat and drought stress. Therefore, these traits can be used as a marker to screen germplasm for heat and drought tolerance. In this paper, we briefly reviewed the results of our studies carried out on heat and drought tolerance in snap bean at Okinawa Subtropical Station, Ishigaki.
ISSN:0021-3551
2185-8896
DOI:10.6090/jarq.40.213