Assessment of physiological maturity in pearl millet (Pennisetum glaucum) hybrids
1997
Joshi, A.K. | Patel, I.D. | Rathod, N.D. | Pethani, K.V. | Dave, H.R. (Gujarat Agricultural University, Jamnagar (India). Millet Research Station)
The physiological maturity was assessed in pearl millet (Pennisetum glaucum L. R. Br.) hybrids at Millet Research Station, Gujarat Agricultural University, Jamnagar, India, in order to investigate the earliest possible time to harvest the crop so as to avoid the quantitative and qualitative losses in grain yield vis-a-vis achieving timely vacation of the field. The crop can be harvested safety around 24 days after full stigmatic stage at daily mean temperature of 27.6 deg C during grain development. The temperature seems to play a pivotal role in determining the period of maturity and there cannot be a universal time to physiological maturity. Nevertheless, appearance of black region in the seeds served as a good morphological criterion. The scarcity of rainfull leading to the terminal moisture-stress forced an early maturity. The moisture content of air-dried seeds harvested at different times did not differ and the seeds harvested as early as 15 days after full stigmatic stage were fully capable of germination provided that dormancy was alleviated. This feature may be used in shortening the breeding cycle.
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