Effect of Delayed Planting on Seed Yield and Its Components of Winter Rapseed (Brassica napus L. ) Cultivars Under Optimum Irrigation and Terminal Drought Stress Conditions

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Khadem Hamzeh Hamidreza; YADAVI ALIREZA; MOVAHHEDI DEHNAVI MOHSEN; SHIRANI RAD AMIR HOSSEIN

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Journal: SEED AND PLANT PRODUCTION JOURNAL Year:2018 | Volume:34-2 | Issue:2 Page(s): 207-232

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Title

Effect of Delayed Planting on Seed Yield and Its Components of Winter Rapseed (Brassica napus L. ) Cultivars Under Optimum Irrigation and Terminal Drought Stress Conditions

Author(s)

Khadem Hamzeh Hamidreza | YADAVI ALIREZA | MOVAHHEDI DEHNAVI MOHSEN | SHIRANI RAD AMIR HOSSEIN | Issue Writer Certificate

Keywords

RapeseedQ2

harvest indexQ2

1000 seed weightQ2

open pollinatedQ1

Abstract

To evaluate the effect of delayed planting and irrigation regimes on yield, yield components and some agronomic traits of winter Rapeseed varieties, two separate field experiments (I: optimum irrigation and II: terminal drought) carried out as split plot arrangements in randomized complete block design with three replications in 2014-2016 cropping seasons at Zarghan field station, Agricultural and Natural Resources Research and Education Center of Fars, Iran. In each experiment three planting dates (07, 17 and 27 October) and four winter Rapeseed varieties; two open pollinated cultivars (Talayeh and Okapi) and two hybrids (Neptune and Elvis)) were assigned to main plot and randomized in subplot, respectively. The results indicated significant effect of irrigation and variety on all traits. The effect of planting date was significant on all traits except 1000 seed weight and number of seed per pod. Terminal drought decreased plant height, days to maturity, seed yield and yield components. The decrease in seed yield by terminal drought and delayed planting was 23. 9 and 18. 4%, respectively. The reduction of 17. 2% of seed no. per pod by terminal drought stress and 16. 2% of pods per plant by delayed planting caused yield reduction. The results also showed that the effect of terminal drought stress on seed yield and harvest index was much higher than the delay in planting. Tallayeh which maintained seed yield superiority under different conditions can be recommended as the suitable variety for similar growing conditions.

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APA: Copy

Khadem Hamzeh, Hamidreza, YADAVI, ALIREZA, MOVAHHEDI DEHNAVI, MOHSEN, & SHIRANI RAD, AMIR HOSSEIN. (2018). Effect of Delayed Planting on Seed Yield and Its Components of Winter Rapseed (Brassica napus L. ) Cultivars Under Optimum Irrigation and Terminal Drought Stress Conditions. SEED AND PLANT PRODUCTION JOURNAL, 34-2(2 ), 207-232. SID. https://sid.ir/paper/395287/en

Vancouver: Copy

Khadem Hamzeh Hamidreza, YADAVI ALIREZA, MOVAHHEDI DEHNAVI MOHSEN, SHIRANI RAD AMIR HOSSEIN. Effect of Delayed Planting on Seed Yield and Its Components of Winter Rapseed (Brassica napus L. ) Cultivars Under Optimum Irrigation and Terminal Drought Stress Conditions. SEED AND PLANT PRODUCTION JOURNAL[Internet]. 2018;34-2(2 ):207-232. Available from: https://sid.ir/paper/395287/en

IEEE: Copy

Hamidreza Khadem Hamzeh, ALIREZA YADAVI, MOHSEN MOVAHHEDI DEHNAVI, and AMIR HOSSEIN SHIRANI RAD, “Effect of Delayed Planting on Seed Yield and Its Components of Winter Rapseed (Brassica napus L. ) Cultivars Under Optimum Irrigation and Terminal Drought Stress Conditions,” SEED AND PLANT PRODUCTION JOURNAL, vol. 34-2, no. 2 , pp. 207–232, 2018, [Online]. Available: https://sid.ir/paper/395287/en

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