ISSN : 0975-3710
EISSN : 0975-9107
V. VAKESWARAN1*, K. ROKINI2, M. RAJAVEL3
1Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
2Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
3Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
* Corresponding Author : vakeswaran@gmail.com
Received : 03-06-2022 Accepted : 27-06-2022 Published : 30-06-2022
Volume : 14 Issue : 6 Pages : 11402 - 11405
Int J Agr Sci 14.6 (2022):11402-11405
Keywords : Tillering, Average yield, Tillering window
Academic Editor : Dr B. S. Vyakarnahal, Dr Vijaya Lakshmi V, Seyyed Fazel Fazeli Kakhki, Dr Naveena K
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to Department of Seed Science and Technology; Department of Crop Physiology, Tamil Nadu Agricultural University, Coimbatore, 641003, Tamil Nadu, India
Author Contribution : All authors equally contributed
In rice, tillering is an important agronomic trait and the tillering stage starts with the appearance of first tiller from axil of the second leaf of the main culm. The degree and rate of grain-filling in rice differs largely with the type of tillers. In this context, studies on tillering pattern and its relation with seed set becomes important. Investigation on the tillering window of the rice varieties TKM 13, CO (R) 50, CR 1009 Sub1, ADT 50 and establishing the correlation with seed filling potential was carried out. Primary tillers which initiated earlier i.e., 36.4, 38.9, 45.1 and 43.8 DAS also completed flowering earlier 95.8, 97.8, 115.9 and 113.6 DAS and had higher seed filling duration 38.2, 40.2, 43.1 and 41.4 days in TKM 13, CO (R) 50, CR 1009 Sub1and ADT 50 rice varieties, respectively when compared to the secondary and tertiary tillers. Tertiary tillers which had emerged after the secondary tillers i.e., 69.9, 72.3, 78.7 and 77.5 DAS had completed flowering on 107.5, 108.2, 129.2 and 126.5 DAS and had seed filling duration of 26.5, 29.8, 29.8 and 28.5 days in rice varieties TKM 13, CO (R) 50, CR 1009Sub1 and ADT 50, respectively
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