nuclear and cytoplasmic inheritance of salt tolerance in bread wheat plants based on ion contents and biological yield

Authors

a. dehdari

a. rezai

s. a. m. mir mohamadi maibody

abstract

although inter-variety variability for salt tolerance has been reported in bread wheat plants, little information is available on the genetic control of ion contents and biomass yield under saline conditions. a diallel cross, including reciprocals of two salt tolerant, two moderately tolerant and two sensitive iranian and exotic bread wheat varieties, was analyzed to investigate the inheritance of ion contents in young leaves at the seedling stage, and biomass yield (by) and stress tolerance index (sti) at maturity. specific reciprocal effects were also studied in f2 populations derived from some f1 reciprocal crosses. the materials were evaluated in a gravel culture under high salinity (ec=22.5 dsm-1) and non-stress (control) conditions. dominance gene effects were more important for na+, k+ concentrations, k+/na+ ratio and by in control, but  both additive and non-additive effects were observed for by, k+ concentration and sti in salt stress condition. significant general and specific maternal effects were observed in f1 generations for all traits, except for by in the saline condition. significant general and specific reciprocal effects indicated cytoplasmic and cytoplasmic × nuclear genes interaction in the response to salt tolerance, respectively. the most tolerant parent, ‘roshan’ was the best combiner parent for related salt tolerant traits followed by ‘kharchia’. the results obtained from maternal effects in f1 and f2 generations indicated that ‘roshan’ was more salt tolerant when used as a female parent. some crosses in the tolerance×sensitive, tolerance×tolerance and moderately tolerant×sensitive groups proved to be the best combinations for obtaining desirable segregants for salt tolerance based on their per se performances, specific combining ability and heterotic effects.

Upgrade to premium to download articles

Sign up to access the full text

Already have an account?login

similar resources

Nuclear and Cytoplasmic Inheritance of Salt Tolerance in Bread Wheat Plants Based on Ion Contents and Biological Yield

Although inter-variety variability for salt tolerance has been reported in bread wheat plants, little information is available on the genetic control of ion contents and biomass yield under saline conditions. A diallel cross, including reciprocals of two salt tolerant, two moderately tolerant and two sensitive Iranian and exotic bread wheat varieties, was analyzed to investigate the inheritance...

full text

effect of seed priming and irrigation regimes on yield,yield components and quality of safflowers cultivars

این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...

The impact of terminal heat stress on yield and heat tolerance of bread wheat

In arid and semi-arid regions of the world bread wheat (Triticum aestivum L.) yield is highlylimited due to late season heat stress, mostly occurring during the reproductive phase. Hence thecurrent study was conducted to evaluate the effect of late season heat stress on grain yield andyield components of 20 spring bread wheat cultivars. For this purpose, a stripe block experimentincluding four ...

full text

Assessment of drought tolerance in land races of bread wheat based on resistance/ tolerance indices

One of the possible ways to ensure future food needs of an increasing world population involves the better water use through the development of crop varieties which need less water and are more tolerant to drought. In order to study the response of twenty landraces of bread wheat to drought stress, an experiment was conducted in a randomized complete block design with three replications under t...

full text

Evaluation of Grain Yield, Agronomical Traits and Drought Tolerance Indices in Some Bread Wheat Cultivars

     In order to study genetic variation and effect of drought stress on grain yield, some agronomical traits and 13 drought tolerance indices, an experiment was conducted on nine cultivars at Shahid Bahonar University of Kerman research field. The experimental layout was conducted in a randomized complete block design with three replications under two complementary irrigation and dryland condi...

full text

Assessment of drought tolerance in land races of bread wheat based on resistance/ tolerance indices

One of the possible ways to ensure future food needs of an increasing world population involves the better water use through the development of crop varieties which need less water and are more tolerant to drought. In order to study the response of twenty landraces of bread wheat to drought stress, an experiment was conducted in a randomized complete block design with three replications under t...

full text

My Resources

Save resource for easier access later


Journal title:
iran agricultural research

Publisher: shiraz univercity

ISSN 1013-9885

volume 24.25

issue 1.2 2007

Hosted on Doprax cloud platform doprax.com

copyright © 2015-2023