نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری، دانشکده علوم کشاورزی، دانشگاه گیلان، گیلان، ایران
2 دانشیار، دانشکده علوم کشاورزی، دانشگاه گیلان، گیلان، ایران
3 استاد، دانشکده علوم کشاورزی، دانشگاه گیلان، گیلان، ایران
4 دانشیار، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Selecting an appropriate breeding method depends on the type and relative proportion of genetic components. In this study, six generations P1, P2, F1, F2, BC1 and BC2 from a cross between two cucurbita varieties crossing of hull-less seed pumpkin and squash, S10×P25, were constructed and evaluated for main stem length. Yield and its components (number of fruit per hectare, number of seeds per fruit, fruit weight and 100- seed weight) were also evaluated. The experiment was carried out in a randomized complete blocks design with three replications in 2019. The results showed significant differences among generations for main stem length. Scaling and Chi-square (χ2) tests suggests the presence of digenic epistasis for this trait. According to the results, additive variance was more important for most of the traits, meaning that selection is a good way to improve these traits. High heterosis was observed in the F1 hybrid for all of the traits. High narrow-sense heritability estimates were shown for all of the traits. Therefore, according to the results of estimating the genetic effects of traits, especially traits related to growth habit and reaching a shorter stem length, the selection method can be used.
کلیدواژهها [English]