Evaluation of agro-morphological traits of Chitti bean lines using multivariate analyses

Document Type : Research Paper


Seed and Plant Improvement Institute (SPII), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran


Improving knowledge on the relationships between agro-morphological traits in Chitti bean (Phaseolus vulgaris L.) will contribute to identifying key traits affecting grain yield for use in bean breeding programs. A field experiment was conducted using an augmented design consisting of 116 breeding lines and three checks (Sadri, Kousha, Khomein local). Statistical analysis showed that grain yield and seeds per plant had the largest variations. Regression analysis showed that days to emergence of the first trifoliate leaf (V3), seeds per pod, and plant height, explained more than 39 percent of the variation in grain yield. Path analysis indicated a high negative direct effect of V3 and a positive direct effect of seeds per pod on grain yield. Cluster analysis helped to classify all genotypes into four distinct groups. From the genotypes studied, 38 superior genotypes were selected, which can be used in the breeding programs of Chitti bean Also, number of days to emergence of the first trifoliate leaf and the number of seeds per pod were identified as traits useful to consider in bean breeding programs aiming at improving the grain yield of Chitti beans.


Article Title [Persian]

ارزیابی صفات زراعی-مورفولوژیکی لاین های لوبیا چیتی با استفاده از روش های آماری چندمتغیره

Author [Persian]

  • علی اکبر قنبری
موسسه تحقیقات اصلاح و تهیه نهال و بذر، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج
Abstract [Persian]

به‌منظور بررسی صفات کمی و کیفی 116 لاین لوبیا چیتی، آزمایشی با سه شاهد (صدری، کوشا، محلی خمین) با استفاده از یک طرح اوگمنتد اجرا شد. بررسی نتایج نشان داد که عملکرد دانه و تعداد دانه در بوته از بیشترین تغییرات برخوردار بودند. تجزیه رگرسیون صفات  حاکی از آن بود که تعداد روز تا سه ‌برگچه اول، تعداد دانه در غلاف و ارتفاع بوته بیش از 39 درصد تغییرات عملکرد را توجیه کردند. تجزیه علیت صفات نشان داد که تعداد روز تا ظهور سه‌برگچه اول و ارتفاع بوته با ضریب منفی و تعداد دانه در غلاف با ضریب مثبت مؤثرترین عوامل مستقیم تغییرات عملکرد دانه هستند. تجزیه خوشه‌ای صفات لاین‌ها را در چهار گروه مجزا قرار داد. از بین ژنوتیپ‌های مورد مطالعه، 38 ژنوتیپ برتر انتخاب شدند که می‌توان از آن ها در برنامه‌های اصلاحی لوبیا چیتی استفاده کرد. همچنین برای افزایش عملکرد می توان از صفاتی مانند تعداد روز تا ظهور سه‌برگچه اول و تعداد دانه در غلاف در برنامه های اصلاحی لوبیا چیتی استفاده نمود.

Keywords [Persian]

  • تجزیه چند متغیره
  • تعداد دانه در غلاف
  • تعداد غلاف در بوته
  • عملکرد و اجزای عملکرد
  • لوبیا
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