National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Pre-anthesis carbon accumulation in stem as reserve material an important source of mobilization during grain development stage (post anthesis) and directly influenced by drought and high temperature. The effect of different drought and high temperature conditions on stem reserve mobilization in relation to yield in wheat genotypes, viz., AKAW-3717, C-306, DHTW-60, HD-2967, HTW-11, KUNDAN, WH-730 and WH-1105 was studied during rabi season of mid-November to April, 2015-16 and 2016-17 in randomized block design with three replications. For control (irrigated) and drought-stressed condition, genotypes were sown at optimum planting date (timely sown), while for heat-stressed experiment sowing date was delayed by one month from the date of timely sown. Faster mobilization in accumulated dry matter was observed in all tested genotypes with increasing drought intensity in combination with high temperature both in peduncle and penultimate internodes. Under delayed sowing with combination of different drought condition, faster remobilization was observed in genotype DHTW-60, HD-2967 followed by WH-1105 and genotype AKAW-3717 had minimum remobilization value under all tested environment. The genotypes were found with high reserve mobilization value showed yield stability under all drought and high temperature environment. However, stem reserves mobilization (SRM) for grain filling time had great importance because current photosynthetic source that are mobilized to grain at post grain filling period and stress condition.
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