Evaluation of growth, yield, relative performance and heat susceptibility of eight wheat (Triticum aestivum L.) genotypes grown under heat stress
محل انتشار: مجله تولید گیاهان، دوره: 7، شماره: 3
سال انتشار: 1392
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 252
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شناسه ملی سند علمی:
JR_IJPPG-7-3_014
تاریخ نمایه سازی: 17 مهر 1398
چکیده مقاله:
Eight spring wheat cultivars were evaluated under three heat stress conditions
(early, late and very late) in order to identify suitable cultivars to develop heattolerant
genotypes resistant to future global warming. Results from the study indicate
that stress did not negatively affect flag leaf area in ‘Prodip’ and ‘Sufi’, flag leaf dry
matter partitioning in ‘Prodip’, ‘BARI Gom-26’ and ‘Shatabdi’, above-ground dry
matter partitioning in ‘Shatabdi’ and ‘BARI Gom-26’, seedling emergence in ‘Sufi’
and ‘BARI Gom-26’, or tiller production in ‘Sufi’ and ‘BARI Gom-26’. With respect
to lower yield reduction, relative performance and heat susceptibility index (HSI),
‘Sufi’ was highly heat stress-tolerant, followed by ‘BARI Gom-26’ and ‘Shatabdi’.
On the basis of HSI values in early heat stress and extremely late heat stress
(corresponding to early and extremely late sowing), ‘BARI Gom-26’ (HSI=0.10,
0.65) and ‘Shatabdi’ (0.22, 0.62) were highly tolerant to early heat stress and
moderately tolerant to extremely late heat stress while ‘Sufi’ was highly tolerant
(0.35) to extremely late heat stress and moderately tolerant (0.51) to early heat stress.
All other genotypes were susceptible to heat stress, among which ‘Gourab’ (2.19,
1.46) was the most susceptible followed by ‘Sourav’ (1.19, 1.42), ‘Prodip’ (1.03,
1.23), ‘BARIGom-25’ (1.61, 0.89) and ‘Bijoy’ (1.04, 1.28). Thus, ‘BARIGom-26’,
‘Shatabdi’ and ‘Sufi’ have the greatest potential to be used as high-yielding wheat
genotypes under warm to hot environments and could be used in a breeding
programme to develop heat-tolerant wheat.
کلیدواژه ها:
نویسندگان
Akbar Hossain
Wheat Research Center, Bangladesh Agricultural Research Institute, Dinajpur-۵۲۰۰ Bangladesh.Faculty of Biological Sciences, Astrakhan State University, Astrakhan ۴۱۴۰۵۶, Russia.
M.A.Z. Sarker
aWheat Research Center, Bangladesh Agricultural Research Institute, Dinajpur-۵۲۰۰ Bangladesh.
M. Saifuzzaman
Wheat Research Center, Bangladesh Agricultural Research Institute, Dinajpur-۵۲۰۰ Bangladesh.
J.A. Teixeira da Silva
Faculty of Agriculture and Graduate School of Agriculture, Kagawa University, Ikenobe, Miki-cho, ۷۶۱-۰۷۹۵, P.O. Box ۷, Miki cho post office, Ikenobe ۳۰۱۱-۲, Kagawa-Ken, ۷۶۱-۰۷۹۹, Japan.