نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی سابق اگرواکولوژی، دانشکده کشاورزی و منابع طبیعی داراب، دانشگاه شیراز، شیراز، ایران.
2 استادیار گروه اگرواکولوژی، دانشکده کشاورزی داراب، دانشگاه شیراز
3 دانشیار گروه اگرواکولوژی، دانشکده کشاورزی و منابع طبیعی داراب، دانشگاه شیراز، شیراز، ایران.
4 کارشناس گروه اگرواکولوژی، دانشکده کشاورزی و منابع طبیعی داراب، دانشگاه شیراز، شیراز، ایران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Abstract:
In order to investigate the genetic diversity of safflower cultivars based on yield, yield components, and mineral nutrient uptake under water stress conditions, a factorial experiment was conducted in a completely randomized design with three replicates at the research greenhouse of the Faculty of Agriculture and Natural Resources, Darab, Shiraz University. The experimental factors included three irrigation levels (normal irrigation, irrigation cut off at flowering stage, and irrigation cut off at head formation stage) and seven cultivars (Faraman, Sina, Omid, Padideh, Goldasht, Parnian, and Golmehr). The aim of this study was to evaluate the genetic variation among safflower cultivars in terms of grain yield, biological yield, plant height, 100 seed weight, number of seeds per head, head diameter, number of heads per plant under water stress conditions, as well as to assess mineral nutrient uptake from soil under such conditions. The results showed that the interaction between irrigation levels and cultivars had a highly significant effect (p ≤ 0.01) on all morphological traits, except for the number of secondary branches. The highest grain yield (31 g) was observed in the Parnian cultivar under normal irrigation. Seed yield of all cultivars decreased under water stress conditions, however, the highest yield (15.8 g per plant) in this condition related to Omid cultivar which also had the minimum variations among the cultivars. The results of this experiment showed that the highest genetic variation of cultivars appeared under normal irrigation conditions as well as high variations of nutrient uptakes.
کلیدواژهها [English]