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Physiological Evaluation of Drought Resistance in Oats
Author(s) -
Yadava R. B. R.,
Bhatt R. K.
Publication year - 1989
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1989.tb00747.x
Subject(s) - proline , avena , agronomy , water content , chlorophyll , biology , drought tolerance , drought stress , horticulture , amino acid , biochemistry , geotechnical engineering , engineering
Twelve varieties of Oat ( Avena sativa L.) were screened for relative drought tolerance based on the magnitude of chlorophyll stability index (CSI), relative water content (RWC) and free proline accumulation. IGFR1‐2670, IGFRI‐3021, IGFRI‐2688 and IGO‐8 showed a lower magnitude of CSI under stress condition in comparison to other tested varieties whereas the values of RWC and tree proline accumulation were higher. Based on the observations of this study it is concluded that, of the varieties tested, IGFRI‐2670, 3021 2688 and IGO‐8 are relatively more drought tolerant than the other genotypes tested. A close agreement was also noticed amongst the trends of CSI and proline accumulation, and per cent reduction in yield in rainfed over irrigated conditions.