Assessment of genotype x environment interactions and stability analysis in field peas (Pisum sativum)


Toklu F. , KARAKÖY T., ANLARSAL A.

INDIAN JOURNAL OF AGRICULTURAL SCIENCES, cilt.79, ss.515-520, 2009 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 79 Konu: 7
  • Basım Tarihi: 2009
  • Dergi Adı: INDIAN JOURNAL OF AGRICULTURAL SCIENCES
  • Sayfa Sayıları: ss.515-520

Özet

This study was conducted during 2000-04 to assess the stability and performance of 10 varieties of field pea (Pisum sativum L.) using univariate and multivariate statistical methods. Genotypic, environmental, and GxE interaction variances were found to be significant for all traits. The amount and distribution of rainfall and soil characteristics had significant effect on grain yield and other plant traits. Estimated stability parameters as co-efficient of variation (CVi), genotypic variances accross environments (S-i(2)), ecovalence (W-i(2)), regression co-efficient (bi) and deviation from regression (S-di(2) ) showed that 2 varieties, namely 'Sprinter' and 'Progress' were the most stable with highest grain yield (2 241 and 2 034 kg/ha, respectively). The lowest b(i) value of 'Sprinter' was an indication of its specific stability for grain yield. Mean grain yield had a significant negative correlation with CVi and, CVi had a strong positive correlation with S-i(2) and b(i), S-i(2) was significantly positive correlated to the W-i(2), b(i) and S-di(2).