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VOL. 7, ISSUE 3 (2025)

Characterization and assessment of photoperiod sensitivity and yield with different sowing dates on local land race thalaivirichan sorghum in Vellore district of Tamilnadu

Authors

A Gopikrishnan, P Thilagam, A Thirumurugan, P Veeramani, T Balaji

Abstract

Thalaivirichan cholam is a sorghum landrace grown in north east and north western part of Tamilnadu state in India, it is locally adapted, often traditional variety developed over time, through well adaptation to its local regions. It is identified by its loose and long ear head with very tall and stout stem. It is Kharif season sorghum sowing taken from 1^st June to end of July depending on the rainfall condition. To study the flowering behaviour this land race in different season viz., summer, kharif and rabi the sowing was taken from 1^st February to 1^st October with one-month interval. The summer and Kharif sowing date from 1^st February to 1^st August attain flowering only in last week of October irrespective of time of sowing indicates highly photo sensitivity of the land race. The delayed sowing influenced the growth and development of the plant through gradual decrease in plant height, biomass, days to 50% flowering and grain yield. The Rabi sowing (1^st September and 1^st October) flowered during November with drastic reduction in plant height, biomass and flowering time when compared to Summer and Kharif sowing. To attain flowering, this land race demand short day with photo period of less than twelve hours than any other factor. First fortnight of June is best for sowing to attain high biomass with higher yield.

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Pages:68-74

How to cite this article:

A Gopikrishnan, P Thilagam, A Thirumurugan, P Veeramani, T Balaji "Characterization and assessment of photoperiod sensitivity and yield with different sowing dates on local land race thalaivirichan sorghum in Vellore district of Tamilnadu". International Journal of Agriculture and Plant Science, Vol 7, Issue 3, 2025, Pages 68-74

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