Studies on Stigma Receptivity and Pollen Viability in Parental Lines of Phule Aadishakti Hybrid of pearlmillet as Affected by Different Seasons
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Authors
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TJ JADHAV
Department of Agricultural Botany, Post Graduate Institute, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahilyanagar, Maharashtra-413722, India
Author
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PY SHINDE
Department of Agricultural Botany, Post Graduate Institute, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahilyanagar, Maharashtra-413722, India
Author
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MT BHINGARDE
Department of Agricultural Botany, Post Graduate Institute, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahilyanagar, Maharashtra-413722, India
Author
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KK BARHATE
Department of Agricultural Botany, Post Graduate Institute, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahilyanagar, Maharashtra-413722, India
Author
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DS THAKARE
Department of Agricultural Botany, Post Graduate Institute, Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahilyanagar, Maharashtra-413722, India
Author
Keywords:
Pearl millet, stigma receptivity, pollen viability, seasonsAbstract
Stigma receptivity and pollen viability are critical determinants of successful hybrid seed production
in pearl millet (Pennisetum glaucum (L.) R. Br.), particularly in male-sterility–based hybrid breeding systems. The
present investigation was undertaken to study the effect of seasons on stigma receptivity and pollen viability in
parental lines of the Phule Aadishakti pearl millet hybrid during Kharif and summer seasons. The experimental
material comprised the male-sterile line DHLB-8A (female parent), the maintainer line DHLB-8B, and the restorer
line DHLB-967 (male parent). Stigma receptivity was evaluated under six starvation interval treatments (0, 1, 2, 3,
4, and 5 days), while pollen viability was assessed at six pollination intervals (0, 2, 4, 6, 8, and 10 hours). Seed set
percentage, number of seeds per earhead, seed weight per earhead, and 1000-seed weight were recorded to
assess reproductive success. Results revealed that both stigma receptivity and pollen viability were significantly
influenced by season, with superior performance observed during the Kharif season compared to the summer
season. Higher seed set and yield attributes in Kharif indicated more favorable environmental conditions for
reproductive processes. The findings highlight the importance of optimizing season-specific flowering
synchronization and pollination timing for efficient hybrid seed production. This study provides valuable insights
for improving seed yield and quality in pearl millet hybrid breeding and commercial seed production programs.
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References
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