Distribution of 14CO2 during ontogeny of chickpea (Cicer arietinum) grown at two moisture levels |
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Authors: | R.S. HOODA I. S. SHEORAN RANDHIR SINGH |
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Affiliation: | Department of Botany, Haryana Agricultural University, Hisar-125004, India |
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Abstract: | The distribution of assimilates of 14CO2 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 14C in pods was 0.4 and 0.9% of the total 14C fed 45 DAS in soluble and 2.5 and 5.1% in insoluble fractions in control and stressed plants, respectively. The %14C received by nodules continuously decreased with increasing age of plants. Stressed plants diverted more 14C to nodules, compared to control, during vegetative and flowering stages. During active seed filling, stressed plants diverted more 14C to reproductive parts and less to nodules, compared to control. Significant amounts of 14C 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. |
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