THE STUDY OF RELATIVE TOLERANCE OF CANOLA VARIETIES (BRASSICA NAPUS L.) TO TERMINAL DROUGHT AND HEAT STRESS IN SOUTHERN KHUZESTAN

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RAHNAMA A.A.

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Journal: CROP PHYSIOLOGY Year:2010 | Volume:2 | Issue:1 Page(s): 93-110

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Title

THE STUDY OF RELATIVE TOLERANCE OF CANOLA VARIETIES (BRASSICA NAPUS L.) TO TERMINAL DROUGHT AND HEAT STRESS IN SOUTHERN KHUZESTAN

Author(s)

RAHNAMA A.A. | Issue Writer Certificate

Keywords

CANOLAQ2

HEAT STRESSQ2

DROUGHT STRESSQ2

TOLERANCE TO STRESS INDEXQ2

GRAIN YIELDQ2

Abstract

In order to study the relative tolerance of 12 CANOLA varieties, this experiment was carried out in a randomized completely block design with three replications including recommended condition planting time in November 6th, recommended planting time, and spring irrigation interruption and late planting time in two years of 2005 and 2006 in Ahvaz research station. Results of two year compound analysis indicated that there are significant differences among agronomic traits in different conditions. The means comparison indicated that a delay in planting caused a 4 day delay in seed germination, 5.6 percent emergence reduction and a reduction of 5.4 days for flowering, compared to recommended conditions. The average maturity duration of genotypes was 158.4 days in recommended conditions and decreased to 155 and 141.9 days in drought and late planting conditions respectively. Late planting date of genotypes caused a reduction of 11.1 pods per plant compared to recommended conditions. The average number of seeds per pod of genotypes in recommended, irrigation interruption and late planting date were 20, 18.4, and 17.3 respectively. The highest and lowest thousand seed weight was 2.9 and 2.6 gr produced in recommended and late planting conditions respectively. The average of seed yield of genotypes decreased to 1705 and 33.1 percent in drought and late planting date compared to recommended conditions. The drought sensitive index indicated a significant difference among genotypes, so that Hyola 401 was better than other genotypes according to seed yield, early maturity and avoiding from seasonal late stress.

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APA: Copy

RAHNAMA, A.A.. (2010). THE STUDY OF RELATIVE TOLERANCE OF CANOLA VARIETIES (BRASSICA NAPUS L.) TO TERMINAL DROUGHT AND HEAT STRESS IN SOUTHERN KHUZESTAN. CROP PHYSIOLOGY, 2(1), 93-110. SID. https://sid.ir/paper/174443/en

Vancouver: Copy

RAHNAMA A.A.. THE STUDY OF RELATIVE TOLERANCE OF CANOLA VARIETIES (BRASSICA NAPUS L.) TO TERMINAL DROUGHT AND HEAT STRESS IN SOUTHERN KHUZESTAN. CROP PHYSIOLOGY[Internet]. 2010;2(1):93-110. Available from: https://sid.ir/paper/174443/en

IEEE: Copy

A.A. RAHNAMA, “THE STUDY OF RELATIVE TOLERANCE OF CANOLA VARIETIES (BRASSICA NAPUS L.) TO TERMINAL DROUGHT AND HEAT STRESS IN SOUTHERN KHUZESTAN,” CROP PHYSIOLOGY, vol. 2, no. 1, pp. 93–110, 2010, [Online]. Available: https://sid.ir/paper/174443/en

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