Genotype x environment interactions for pod yield and quality traits in garden pea (Pisum sativum L.)

Abstract

The study of genotype x environment interactions help in the identification of stable genotypes for use in future breeding programme. Besides, high yield potential garden pea is high priced for its tender green pods and sweet taste of grains. Keeping this in view twenty eight genotypes of garden pea (Pisum sativum L.) were evaluated in randomized block design (RBD) under six environments of Himachal Pradesh viz., dry temperate zone (summer season): Kukumseri, 2003 (El ); Kukumseri, 2004 (E2), wet sub-temperate zone (winter season): Palampur, 2003-04 (E3); Palampur, 2004-05 (E4) and humid sub-temperate zone (winter season): Bajaura, 2003-04 (Es) and Bajaura, 2004-05 (E6). Each entry was sown in two rows at spacing of 45 cm x 5 cm and data were recorded on ten competitive plants chosen at random on pod yield per plant (g), TSS (%) and chlorophyll content (mg/g). The data were analyzed as per Eberhart and Russell [1] model. The significance of regression coefficient (bi) from unity and deviation from regression (S2di) for each genotype was tested using Hest and F-test, respectively.