CHARACTER ASSOCIATION IN MULBERRY UNDER DIFFERENT MAGNITUDE OF SALINITY STRESS

K. Vijayan; S. G. Doss; S. P. Chackraborti; P. D. Ghosh; B. Saratchandra

doi:10.9755/ejfa.v22i4.4879

Authors

K. Vijayan Central Sericultural Research and Training Institute, Berhampore, West Bengal-742 101, India; Institute of Plant and Microbial Biology, Academia Sinica, Taipei, Taiwan-115, ROC
S. G. Doss Central Sericultural Research and Training Institute, Berhampore, West Bengal-742 101, India;
S. P. Chackraborti Central Sericultural Research and Training Institute, Berhampore, West Bengal-742 101, India;
P. D. Ghosh Department of Botany, University of Kalyani, Nadia, West Bengal-741 235, India;
B. Saratchandra 3 Central silk Board, Madiwala, Bangalore-560068, India;

DOI:

https://doi.org/10.9755/ejfa.v22i4.4879

Keywords:

Mulberry, correlation coefficient, salinity, leaf yield

Abstract

Information on interrelationships among traits is important for varietal development. Under stress conditions the magnitude of character association is known to change significantly. In mulberry such information on such aspects is lacking. Hence, the interrelationships of leaf yield and its component morphological, physiological and biochemical traits were investigated under four different salinity conditions using 11 genotypes. Correlation coefficient between leaf yield and its component traits was found changing significantly under different salinity stresses. Under normal condition leaf yield was found significantly and positively correlated with leaf size, root length, shoot length, protein content, and water use efficiency. However, under severe salinity imposed by 1.00% NaCl, significant correlation was observed with plant height, leaf size, shoot weight, root weight, root length, protein, nitrogen reductase (NRase) activity and water use efficiency (WUE) of the plant. Similarly, relationship of plant height with other traits also changed with increasing salinity. These changes in the interrelationships among the traits point to the need of different selection strategy for breeding varieties under normal and abiotic stress conditions.