Comparison of yield and yield components of pinto bean promising lines in three regions of the Isfahan province

Pulses crops with nitrogen fixation ability have a special place in the crop rotation. In order to compare the agronomic characteristics of five promising lines of pinto beans with Sadri and local Khomein cultivars as control a study was conducted at 2011- 2012 cropping seasons، in three cities of Fereidoonshahr، Dehaghane and Semirom in Isfahan Province. Randomized complete block design with four replications was used for the study. In Fereidoonshahr area، yields of KS21191، E9، and E10 hopeful lines were respectively، 3035، 3412 and 3455 kg ha-1، without significantly different from Sadri control cultivar، but were respectively 37، 21. 8 and 20. 3% less than Khomein local varieties. In Dehaghane area، yields of all hopeful lines were significantly less than both control cultivars. In Semirom region، hopeful lines of E9 and E10، respectively، with yields of 2900 and 2720 kg ha-1 had equivalent yield with two control varieties. Number of pods per plant and seeds per pod were the two major components that explain a significant part of the difference between the genotypes. Trend of harvest index change were similar in the two regions Dehaghane and Fereidoonshahr and Khomein local cultivars، respectively with 42. 8 and 38. 8 HI percent، had the highest HI values. In Semirom region، harvest index for Sadri and Khomein cultivars and lines E9 and E10، were 37. 1، 36. 8، 35. 8 and 36. 5 percent respectively. According to the results of this study، yield of E9 and E10 lines، in both Fereidoonshahr and Semirom regions، and yield of KS21191 line، only in Fereidoonshahr can be equal with the yield of control cultivar. The promising lines of this study were not appropriate for the Semirom area.