Effects of drought stress on some biochemical characteristics and crop canola liness (Brassica napus L.)

Subject Areas : Journal of Plant Ecophysiology

Homayoun Chegeni ¹ (دانشجوی دکتری فیزیولوژی گیاهان زراعی پردیس دانشگاه فردوسی مشهد.)
M. Goldani ² (دانشیار گروه زراعت، دانشگاه فردوسی مشهد، مشهد، ایران)
امیرحسین شیرانی راد ³ (استاد پژوهش موسسه تحقیقات اصلاح و تهیه نهال و بذر کرج.)
محمد کافی ⁴ (استاد گروه زراعت، دانشگاه فردوسی مشهد)

Received: 2015-05-25 Accepted : 2015-10-13 Published : 2017-02-19

Keywords: Canola, Chlorophyll, drought, oleic and linoleic acid,

Abstract :

The effect of drought on oleic acid, linoleic acid, chlorophyll content and yield of oilseed rape lines to split plot in a randomized complete block design with four replications was. Irrigation as main plot in the two level of normal irrigation on 80 mm evaporation class A pan and stress (irrigation of the flowering stage onwards) and lines as subplots in four levels BAL3, R15, 109, BAL15 was. The research was conducted in 2014 in the field of Seed and Plant Improvement Institute, Karaj. The effect of irrigation on grain yield, linoleic acid, chlorophyll a and chlorophyll b meaningful was. The highest percentage of oleic acid acid 66.14 percent to 63.79 percent line L109 and the lowest was in line with the BAL15. Irrigation and online interactions on chlorophyll a and b (P<0.01) and total chlorophyll (P<0.05) was significant. The amount of chlorophyll a stress of 1.147 to 0.916 mg per g fresh weight decreased by 10 percent and the amount of chlorophyll b in the treatment of stress decreased 11 percent compared to conventional irrigation. A total of 1.506 to 1.239 mg per g fresh weight chlorophyll content decreased in comparison with irrigation. The interaction between irrigation and online, in the usual irrigation line L109 grain yield by 5568 kg per hectare have the highest product. The lowest grain yield was in line BAL15 after drought stress applying line BAl15 about 35 loss percentage yield.