Genetic variability and identification of markers associated with germination parameters in gamma-irradiation induced mutants of sunflower under water stress condition
نویسندگان
چکیده مقاله:
The objectives of the present research were to evaluate the variability induced by gamma-irradiation among a population of M8 sunflower mutant lines and to identify molecular markers associated with different seed germination traits. Experiments were carried out under well watered and water-stressed conditions using a randomized blocks design, with three replications. The studied traits consisted of critical times (the time to starting germination, TSG), the time to 50% germination (T50%G) and the time to maximum germination (TMG) and the percentage of seed germination (PSG). In both conditions, a large genetic variation was observed among mutant lines. Some mutant lines showed higher values of germination parameters when compared with the original lines (AS613). Results revealed the a efficiency of gamma irradiation for inducing genetic variation in sunflower, for germination traits. A highly negative, significant correlation was observed between PSG and the critical times of germination. Mutant line “M6-39-2-1” was significantly superior to the original line, for the studied traits, under the water-stressed condition. Multiple regression analyses showed that some AFLP markers were associated with several traits. The most informative AFLP markers were “E37M62-5” and “E33M60-6” which did not have any interactions with water stress. Several markers were associated with seed germination parameters in both conditions. The markers which were associated with different traits could be used in marker-assisted selection for germination parameters.
منابع مشابه
Identification of Genes and Molecular Markers Associated with Germination Components in F9 Lines of Rice under Osmotic Stress
water stress and, in this regard, it is necessary to improve rice cultivars to tolerance to environmental stresses. In this research 154 recombinant inbred lines (F9) derived from a cross between Shah-Pasand and IR28 in three conditions (non-stress, osmotic stress -0.3 and -0.6 Mpa induced through polyethylene glycol-6000) were evaluated as a factorial experiment in randomized complete block de...
متن کاملMolecular and morphological assessment of genetic variability induced by gamma radiation in canola
Mutation induction is considered as an effective way to enrich plant genetic variation, particularly for traits with a very low level of genetic variation. This research was conducted to assess genetic variation induced by gamma radiation in M2 and M3 mutant lines of canola (Brassica napus L.) by SSR and morphological characteristics and to identify useful mutants in terms of agronomic traits. ...
متن کاملAssessment of genetic diversity and identification of SSR markers associated with grain iron content in Iranian prevalent wheat genotypes
Iron is one of the most important nutrients in the human diet. According to the high consumption of staple foods such as wheat, the deficiency of iron in these crops would lead to nutritional disorders and related complications. To identify microsatellite markers associated with wheat grain iron content,38Iranian prevalent wheat genotypes were assessed using 30 pairs of genomic and EST microsat...
متن کاملGenetic Study of Grain Yield and its Components in Bread Wheat Using Generation Mean Analysis under Water Stress Condition
Abstract In order to study the inheritance of grain yield and its components in bread wheat, two cultivars, Karchyya(drought and salinity tolerant) and Gaspard (sensitive to drought and salinity stress) were crossed.Parents together with F1, F2, F3, BC1and BC2 generations were evaluated using a randomized complete block design with three replications in 2008-2009 growing season.Grain weight per...
متن کاملEffect of mycorrhizal fungus on growth and physiological parameters of sunflower and safflower under Cd stress.
A greenhouse experiment with potted plants was conducted to study the effect of arbuscular mycorrhiza (Glomus intraradices) fungal inoculation on The growth, cadmium concentration and The activates of antioxidant enzymes (Superoxide Dismutase (SOD) and Catalase (CAT)) in sunflower and safflower in four levels of Cd (0, 2.5, 5 and 25 mg Cd kg-1 soil). Treatment were arranged in the experiment fa...
متن کاملphylogeography and genetic diversity of the lesser mouse- eared bat (myotis blythii) in iran
in current study, 63 samples of bat populations collected from differ regions were used for evaluating the geographic variations. twenty cranial and dental characters for traditional morphometric and landmarks method on the ventral, dorsal skull and mandible for geometry morphometric studies were used. statistical analyses of traditional morphometric and geometry morphometric data indicated low...
منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ذخیره در منابع من قبلا به منابع من ذحیره شده{@ msg_add @}
عنوان ژورنال
دوره 1 شماره 2
صفحات 1- 8
تاریخ انتشار 2012-10-22
با دنبال کردن یک ژورنال هنگامی که شماره جدید این ژورنال منتشر می شود به شما از طریق ایمیل اطلاع داده می شود.
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023