PHENOTYPIC STABILITY OF HYBRIDS AND PARENTS IN SESAME (Sesamum indicum L)

BALA RAM BENIWAL¹*, KAMLESH KUMAR², E.V.D. SASTRY³, Z.S. SOLANKI^4
1ICAR-AICRP on Pearl millet, Agriculture University, Jodhpur, Mandore, 342304, Rajasthan, India
²ICAR-AICRP on Pearl millet, Agriculture University, Jodhpur, Mandore, 342304, Rajasthan, India
³College of Agriculture, Central Agricultural University, Iroisemba, Imphal, 795004, Manipur, India
⁴Former Vice Chancellor, Agriculture University Kota, 324001, Rajasthan, India
* Corresponding Author : drbalarambeniwal@gmail.com

Received : 17-05-2018     Accepted : 27-05-2018     Published : 30-05-2018
Volume : 10     Issue : 10       Pages : 6131 - 6134
Int J Agr Sci 10.10 (2018):6131-6134

Keywords : Sesame, stability, regression coefficient, G x E interaction, regression from deviation
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to Swami Keshwanand Rajasthan Agricultural University, Bichhwal, Bikaner, 334006, Rajasthan, India
Author Contribution : All author equally contributed

Phenotypic stability studies in sesame for oil content and agronomical traits over three different dates using 79 genotypes (60 hybrids and 19 parents) indicated that pooled analysis of variance significant and influence of sowing dates on all the characters. The linear component of environment accounted more than the G x E (linear) component. Stability parameters mean sum of squares (MSS) due to genotype x environment (linear) was significantly higher than the MSS due to pooled deviation for seed yield per plant only. Hence prediction across the environments was possible for the seed yield per plant only. Partitioning of variance due to environment and g x e interaction, i.e., e + (g x e) into environment linear, linear component of g x e and non linear component of g x e revealed that large part of g x e interaction was due to non linear component. Pooled deviation was significant for all the characters, indicating the greater role of unpredictable components in the G x E interaction. In the present study parents RT-54, RT-103 and Uma found stable for seed yield per plant with above average grain yield. RT-103 and Uma showed average adoptability while RT-54 performed superior under optimum sowing time. In addition to yield RT-103 also exhibited average adaptability and stability for important seed yield components i.e., days to maturity, plant height, seeds per capsule and oil content.

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