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Chilling tolerance in February seeded Chaite rices (Oryza sativa) of Nepal
Author(s) -
STHAPIT B. R.,
WILSON J. M.
Publication year - 1992
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1992.tb04000.x
Subject(s) - biology , oryza sativa , germination , seedling , chlorophyll , etiolation , shoot , botany , horticulture , agronomy , biochemistry , gene , enzyme
Summary Five Chaite and three main season rices Oryza sativa genotypes were examined to assess the effect of low temperature on the germination and growth of roots and shoots, root regeneration capacity, the extent of chlorophyll synthesis of etiolated seedlings, total chlorophyll content and photo‐chemical efficiency (Fv/Fm) of chilled plants. Cultivated differences in the ability to germinate and grow at low temperatures have been found. The poor ability of Chaite rices to tolerate photo‐oxidative tissue damage during January and February seemed to be the major factor resulting in poor seedling growth.