Vol. 9 No. 1
Yield stability in mulberry over different regions of Eastern and North-Eastern India
Author(s): M. K. GHOSH, B. B. BINDROO, N. K. DAS AND M. K. SINGH
Abstract: The leaf yield performance of 10 mulberry varieties was tested through stability analysis for different crop seasons conducting experiment in seven test centers for 5 years of Eastern and North-Eastern zones of India e.g., Berhampore, Kalimpong, Muluk in West Bengal; Koraput in Orissa; Ranchi in Jharkhand; Jorhat in Assam and Imphal in Manipur over years and it significant genotype × environment (G × E) interaction was observed. Variance for deviation from regression (Sdi2) of varieties C2017, RFS175 and Thalaghatapura did not differ significantly from zero. However, the bi values of only RFS175 out of these three is not significantly different from unity and may be considered to be a stable variety with moderate leaf yield. While C2017 having bi value significantly higher than unity is suitable for places like Berhampore, Jorhat and Imphal having positive environmental indices, Thalaghatapura having bi value significantly lower than unity is suitable for Koraput, Muluk, Ranchi and Kalimpong with negative environmental indices.
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