evaluation of drought tolerance in rapeseed (brassica napus l.) cultivars using drought tolerance indices

نویسندگان

massumeh aliakbari

hooman razi

seyed abdolreza kazemeini

چکیده

drought is the most significant constraint for crop production in arid and semi-arid regions. in order to assess drought tolerance in fifteen rapeseed (brassica napus) cultivars using yield-based drought tolerance indices, two experiments were conducted at the research station of college of agriculture, shiraz university, shiraz, iran during 2009-2010 growing season. the cultivars were arranged in a randomized complete block design with four replications in each experiment. the experiments differed in respect to irrigation regimes. the well-watered and water-limited experiments were irrigated after 40% and 70% depletion of available soil moisture, respectively. analysis of variance showed highly significant differences among the rapeseed cultivars for yield in normal and stress conditions as well as all the drought tolerance indices. karun cultivar had the maximum seed yield in both conditions. yield in non-stress (yp) and stress (ys) conditions showed positive and significant correlations with stress tolerance index (sti), mean productivity (mp), geometric mean productivity (gmp) and modified stress tolerance indices  (k1sti and k2sti). biplot analysis also indicated that sti, mp, gmp, k1sti and k2sti were more reliable indices to identify drought tolerant rapeseed cultivars. the results of biplot and cluster analysis revealed that karun, nk aviator and nk octans were the drought tolerant rapeseed cultivars. therefore, they may be recommended to cultivate in drought prone regions and also can be used in rapeseed breeding programs aimed at improving drought tolerance

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evaluation of Drought Tolerance in Rapeseed (Brassica napus L.) Cultivars Using Drought Tolerance Indices

Drought is the most significant constraint for crop production in arid and semi-arid regions. In order to assess drought tolerance in fifteen rapeseed (Brassica napus) cultivars using yield-based drought tolerance indices, two experiments were conducted at the research station of College of Agriculture, Shiraz University, Shiraz, Iran during 2009-2010 growing season. The cultivars were...

متن کامل

Evaluation of Drought Tolerance in Rapeseed (Brassica napus L.) Cultivars Using Drought Tolerance Indices

Drought is the most significant constraint for crop production in arid and semi-arid regions. In order to assess drought tolerance in fifteen rapeseed (Brassica napus) cultivars using yield-based drought tolerance indices, two experiments were conducted at the research station of College of Agriculture, Shiraz University, Shiraz, Iran during 2009-2010 growing season. The cultivars were...

متن کامل

Study of Genetic Variation and Drought Tolerance in Commercial Rapeseed (Brassica napus L.) Cultivars

In order to identify drought stress tolerance in rapeseed, nine commercial rapeseed cultivars (Opera, Karaj1, Karaj2, Karaj3, Zarfam, Okapi, Talayeh, Licord and Modena) were evaluated under two conditions (normal and drought stress) in Kangavar region in the west Iran in 2014-2015 growing season. This research was carried out in a split plot experiment based on completely randomized design in f...

متن کامل

Evaluation of Cold Tolerance in Rapeseed (Brassica napus L.) Using Stress Tolerance Indices

In order to study the response of 120 genotypes of rapeseed (including 100 hybrids and 20 parents) in terms of cold stress tolerance, an experiment was conducted in α-lattice design with two replications under normal (September) and late sowing (October) conditions during two years. Combined analysis of variance showed that genotypes were significantly different at 1% and there was a significan...

متن کامل

Evaluation of Drought Tolerance in Barley Genotypes (Hordeum vulgare L.) using Drought Tolerance Indices

Extended Abstract Introduction and Objective: Drought stress is one of the most important factors in reducing yield and barley production in rainfed arid regions, and counteracting or reducing the effect of stresses as a useful solution to increase barley yield. Therefore, improvement of stress-tolerant and suitable barley cultivars for arid and semi-arid regions is essential. Material and Me...

متن کامل

Study of Drought Tolerance Indices and Their Relationship with ISSR Markers in some Canola (Brassica napus L.) Cultivars

In the present study, in order to evaluate the drought tolerance indices and their relationship with ISSR markers, 12 rapeseed genotypes were studied using a factorial experiment based on completely randomized block design under the three irrigation treatments (control and irrigation after drainage of 60 and 85% moisture content) in the greenhouse of Mohaghegh Ardabili University, Iran. Drought...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
international journal of advanced biological and biomedical research

ناشر: casrp publishing company

ISSN 2383-2762

دوره 2

شماره 3 2014

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023