Photoperiodic response and accelerated generation turnover in chickpea

Sethi, S.C. and Byth, D.E. and Gowda, C.L.L. and Green, J.M. (1981) Photoperiodic response and accelerated generation turnover in chickpea. Field Crops Research, 4. pp. 215-225.

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Rapid generation advancement enables the breeder to produce and test near homozygous lines in a shorter period of time. Chickpea is a quantitative long-day plant. Three experiments were conducted, two at ICRISAT Center. Hyderabad one at Bangalore, from December 1978 to August 1979 to assess potential of extended daylength to shorten the life cycle by early flower induction. The studies involved cultivars of different maturity groups. Twenty-four hour daylength treatment by using incandescent lights induced early flowering. All cultivars flowered simultaneously and took 32 to 35 days after sowing, in contrast to 32 to 74 days taken for 50% flowering under normal daylengths. Plants exposed to 24-h daylength had slightly increased plant height, more pods and larger seeds in one of the experiments. Physiologically mature pods could be harvested as early as 62 days after sowing from plants induced to flower early by 24-h treatment. Once flowering was induced, continuation of the extended daylength treatment had no effect on maturity. This technique will allow harvesting of more than one generation per year.

Item Type: Article
Author Affiliation: International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502 324, Andhra Pradesh, India
Subjects: Crop Improvement
Divisions: Chickpea
Depositing User: Sandhya Gir
Date Deposited: 21 Apr 2011 10:49
Last Modified: 21 Apr 2011 10:49
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