Synchronization Techniques for Hybrid Seed Production of Pearl Millet Hybrid BPMH-3
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Date
2017-07
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University of Agricultural Science, Dharwad
Abstract
The present investigation was carried out during kharif 2016 at Main Agricultural Research Station, University of Agricultural Sciences Dharwad, to investigate the effect of different staggered sowings and application of additional dose of nitrogen to late parent at different days on synchronization of flowering between male (TPRT 111)and female parental lines (ICMA 9277) of pearl millet hybrid BPMH-3.
Male parent flowered late by eleven days than female parent with simultaneous sowing. Among the different staggerings, staggered sowing of male parent nine days earlier to female parent and application of additional dose of 10kg N ha-1at 35days after sowing resulted in better synchronization of flowering and highest seed yield (1138 kg ha-1) over control (644.1 kg ha-1). This treatment also resulted in narrow difference in flowering between pollen parent and seed parent and significantly increased the seed set per cent (85.03%), test weight ( 10.63 g), seed yield per plant (22.13 g plant-1), seed yield per plot (1230 g), seed germination (95.40%), seedling vigour index (3603) and seedling dry weight (726 mg/10 seedlings)compared to other treatments.
The another field experiment to know the effect of dates of sowing on flowering behaviour of parental lines of pearl millet hybrid BPMH-3 was conducted at Saidapur farm Dharwad during 2016. The sowing dates influenced the flowering behaviour of parental lines. Sowing during second fortnight of December was better as compared to other sowing dates because the difference in days to 50 per cent flowering in both the parents was narrow leading to synchronization. None, of the sowing dates gave perfect synchrony and flowering difference (50%) ranged from twelve to five days during first fortnight of June to Second fortnight of December.