GENETIC ANALYSIS OF SEGREGATING GENERATION OF TOMATILLO (Physalis ixocarpa Brot.) GENOTYPES BASED ON THEIR YIELD AND YIELD CONTRIBUTING CHARACTERS

Abstract

An experiment was conducted at experimental field, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from October 2019 to March 2020 to analyze the genetic diversity of tomatillo genotypes. Ten genotypes were used for the study. G showed the highest yield among all other genotypes. Lowest DFF were found in G 12 7 . G gave the best result on number of fruits per plant among all other genotypes. Highest fruit weight found in G 7 10 . In case of DFF, number of CPP, FPP, FL, SPF and FW showed higher influence of environment for the expression of these characters. On the other hand, LL, LW, BPP, and FYPP showed least difference in phenotypic and genotypic variance suggesting additive gene action for the expression of the characters. Most of the characters under the present study exhibit the highest value of heritability. In general, most of the characters showed the genotypic correlation coefficient were higher than the corresponding phenotypic correlation coefficient suggesting a strong inherent association between the characters under study. Significant positive correlation with yield was found in DFF, PH, CPP, FPP, FW and FD. Path coefficient analysis showed that single fruit weight had the positive correlation with fruit yield per plant. Coherently, this trait contributes to the yield through direct effect (0.547) indicating selection will be judicious and more effective for these characters in future breeding program. Selection should be applied for desired characters such as lowest days to first flowering in G 7 , increased number of fruits per plant in G10, highest fruit weight in G7 , fruit diameter and fruit length to develop high yielding varieties.