Evaluation of the potential yield and associated component traits of lowland Boro rice cultivars in Assam, India

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Research Articles | Published:

Print ISSN : 0970-4078.
Online ISSN : 2229-4473.
Website:www.vegetosindia.org
Pub Email: contact@vegetosindia.org
Doi: 10.1007/s42535-022-00426-y
First Page: 453
Last Page: 463
Views: 1494


Keywords: Crop duration, Effective tillers, Grain yield, Harvest index, Phenotyping


Abstract


The selection and development of potent boro rice, a lowland rice cultivar among its diverse types has been a major concern in Assam. The present study was conducted to find a potent boro rice cultivar based on potential yield and associated component traits, following the standard evaluation system of the International Rice Research Institute. The evaluation was carried out by randomized block design method and found out the potential yield of 117 boro rice cultivars based on their phenotypic yield traits. Bahurupi, PSB 68, Mandhya Vijaya, Bahunipi, and Pathariya were the best performing cultivars, in terms of high grain yield with better performing associated traits. While yield and production of the cultivars have been found to be affected by crop duration, yielding was more in short crop duration (105–135 days). A wide range of effective tillers was also observed among the cultivars. About 33.33% possess below ≥ 10, 30.76% possess 11–20, and 35.89% possess above 20 effective tillers per plant. However, grain yield was highly influenced by associated component traits such as panicle length, spikelets per panicle and panicle weight. The result of the study indicates the significant association of grain yield with its associated component traits and further helps in selecting boro rice cultivars with higher yield for future breeding programmes.


Crop duration, Effective tillers, Grain yield, Harvest index, Phenotyping


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Acknowledgements


We highly acknowledge Dr. Rupankar Bhagawati and the members of RRLRRS, Gerua, Assam for helping us with the experimental setup and technical assistance. We also thank Preetom Regon for the technical support in performing the data analysis. We also acknowledge DST-FIST, Govt. of India for the sponsored infrastructural facilities in the Dept. of Botany, Gauhati University.


Author Information


Pradhan Amit Kumar
Department of Botany, Gauhati University, Gauhati, India
akpradhan@pragjyotishcollege.a
Tanti Bhaben
Department of Botany, Gauhati University, Gauhati, India
btanti@gauhati.ac.in