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S.K. Chetia and Ram Kumar
Pulses Section, Department of Plant Breeding, CCS Haryana Agricultural University, Hisar - 125 004, India

Page Range:
111 - 114
Article ID:
Online Published:
A study was conducted to know the effect of temperature and photoperiod on different growth phases and grain yield and its attributing characters of peas during November 2000 to August 2001. Pea variety DMR39 was sown in six different photothermal environments, which were created by manipulating the sowing dates. Yield of the pea variety was strongly responsive to the heat unit received during reproductive phase i.e. from flowering to physiological maturity and the same was reduced at a higher temperature. High temperature during reproductive phase reduced significantly the number of seeds per pod. The photo thermal units received during the vegetative stage had a significant positive correlation with yield where as, it had a significant negative correlation with yield as well as with pods per plant and seeds per pod during reproductive phase of the crop.
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