Screening Methods and Indices of Heat Tolerance in Spring Wheat

doi:10.3321/j.issn:1000-7091.1997.03.005

Abstract

Abstract: Using 51 genotypes of spring wheat,three screening methods and indices for heat tolerance were investigated and appraised in this study. In field,genotypes were postponed to plant or sheded with transparent plastic film in filling period. The susceptibility index of each genotype,based on ear grain weight(Se)or 1000 grain weight(Sg),was calculated to evaluate its heat tolerance. Under room conditions,the membrane thermostability,expressed as relative injury(RI),of seedlings of each genotype was tested.Analysis of correlation showed that the correlated coefficients of Se between the years and within the years were positive and highly significant (r=0.676~0.757),which indicated that Se was an indicator of good repeatibility,and that the correlation between RI and Sg(r=0.328) was significantly positive,which indicated that the membrane thermostability of genotypes was a better response to heat tolerance in field in a certain degree. On the results above the methods used here were suitable for the identification of heat tolerance in spring wheat in the future.

Key words: Spring wheat, Heat tolerance, Screening method

CLC Number:

S512.103

Xu Ruqiang. Screening Methods and Indices of Heat Tolerance in Spring Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1997, 12(3): 22-29. doi: 10.3321/j.issn:1000-7091.1997.03.005.

/ / Recommend / Download Citations

URL: http://www.hbnxb.net/EN/10.3321/j.issn:1000-7091.1997.03.005

http://www.hbnxb.net/EN/Y1997/V12/I3/22

References

[1] 金善宝主编. 小麦生态理论与应用. 杭州:浙江科技出版社, 1992, 200~280.
[2] 拉加拉姆等,邹裕春等译. CIMMYT 的小麦育种. 成都:四川科技出版社, 1994, 1~24.
[3] 北方小麦干热风科研协作组. 小麦干热风. 北京:气象出版社, 1988, 1~53.
[4] 气候变化对农业的影响及其对策课题组. 气候变化对农业的影响及其对策. 北京:北京大学出版社,1993, 1~150.
[5] 张晓龙,等. 测定小麦种子饱满度的新方法. 作物学报, 1983, 9(2):123~127.
[6] 韩风山,等. 小麦午睡原因的研究 I 大田生态因子与午睡的关系. 作物学报, 1984, 10(2):137~143.
[7] 韩风山, 等. 小麦午睡原因的研究 Ⅲ 形成小麦午睡生态生理因素作用的综合分析. 作物学报, 1988, 14(4):296~302.
[8] Al-Khatib K and Paulsen GM. Photosy nthesis and productivity during high-temper ature stress of wheatg enotypes from major world regions. CropSci,1990,30:1127~1132.
[9] Br ucker PL and Frohberg RC. Stress to lerance and adaptation in spring wheat.Crop Sci,1987, 27:31~36.
[10] Evans LT, etal. Wheat. In:Evans LT(Editor). Crop Physiology. Cambridge:Cambridge University Press. 1975, 101~147.
[11] Ehdaie B, etal. Differentialr esponses of landr ace and improved spring wheat geno types to stress environments. CropSci, 1988, 28:838~842.
[12] He Zhonghu and RajaramS. Differential responses of bread wheat char acters to high temperature. Euphytica, 1994, 72:197~203.
[13] Midmore DJ, etal. Wheat in tropical environments I. Phasicdev elopment and spike size. Field CropRes, 1982, 5:185~200.
[14] Shpiler L and Blum A. Differ ential reaction of wheat cultivars to hot environments. Euphytica, 1986, 35:483~492.
[15] Shpiler L and Blum A. Heat toler ance for yield and its components in different wheat cultivars. Euphytica, 1991, 51:257~263.
[16] Saadalla MM, etal. Heat tolerance in winter wheat I. Har dening and genetic effects on membrane thermo stability Ⅱ. Membr ane thermo st ability a nd field per formance. Cro p Sci, 1990, 30:1243~1251.
[17] Wiega nd CL and Cuellar JA. Duration of grain filling and kernel weight of wheat as effected by temper ature.CropSci, 1981, 21:95~101.

Please choose a citation manager

Content to export