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Distribution of 14 CO 2 during ontogeny of chickpea ( Cicer arietinum ) grown at two moisture levels
Author(s) -
HOODA R.S.,
SHEORAN I. S.,
SINGH RANDHIR
Publication year - 1989
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.1744-7348.1989.tb02114.x
Subject(s) - biology , sowing , moisture , agronomy , moisture stress , horticulture , botany , materials science , composite material
Summary The distribution of assimilates of 14 CO 2 in ethanol soluble and insoluble fractions was measured at 20‐day intervals from 45–135 days after sowing (DAS) in chickpea ( Cicer arietinum ) grown at two moisture levels. The contribution of pre‐flowering assimilates to pods, although very low, was higher under the stress conditions. At the time of harvest, the recovery of 14 C in pods was 0.4 and 0.9% of the total 14 C fed 45 DAS in soluble and 2.5 and 5.1% in insoluble fractions in control and stressed plants, respectively. The % 14 C received by nodules continuously decreased with increasing age of plants. Stressed plants diverted more 14 C to nodules, compared to control, during vegetative and flowering stages. During active seed filling, stressed plants diverted more 14 C to reproductive parts and less to nodules, compared to control. Significant amounts of 14 C were retgined by the stem and leaves during the seed‐filling period and it appears that there is scope for the remobilisation of pre‐flowering, as well as post‐flowering assimilates for seed‐filling of chickpea.