水稻种质资源耐旱性鉴定与评价

doi:10.3969/j.issn.2096-1197.2018.05.01

Journal of Northern Agriculture ›› 2018, Vol. 46 ›› Issue (5): 1-8.doi: 10.3969/j.issn.2096-1197.2018.05.01

• 著者文摘 • Next Articles

Identification and evaluation of drought tolerance for rice germplasm resources

WANG Baoxiang[1];YU Jialdeng[1];XU Bo[1];LIU Yan[1];XING Yungao[1];SUN Zhiguang[1];CHIMing[1];SHI Shilai[1];BIAN Jianmin[1];XU Dayong[1]

[1]Lianyungang Agricultural Science Research Institute,Xuhuai District,Lianyungang 222006,China;[2]Jiangsu Province Modem Crop Production Collaborative Innovation Center,Lianyungang 222006,China;[3]Key Laboratory of Crop Physiology,Ecology-and Genetic Breeding,Ministry of Education,Nanchang 330045,China;[4]Jiangxi Agricultural University,Nanchang 330045,China

Received:2018-07-26 Online:2018-08-19 Published:2019-08-19

Abstract

Abstract: In order to explore the excellent drought-tolerant rice resources, 91 domestic and foreign rice cultivars were examined, and ll-e differences in drought tolerance between heading and mamrily of different rice varielies were invesligaled by using two cultivation modes： wee and dry farming. The results showed that the yield components of rice decreased under drought stress, and the number of eftective panicles decreased most significantly, indicating that the effective panicle number was sensitive to drought stress. According to the membership fhnction values of the stress coefficients of each index, the tested varieties were divided into three categories： strong drought tolerance, drought tolerance and drought sensitivity. A total of 17 strong drought-tolerant varieties, 69 drought-tolerant varieties and 5 sensitive varieties were screened. These drought-tolerant resources should provide excellent materials for breeding drought-tolerant rice varieties.

Key words: Drought tolerance;Evaluation

CLC Number:

S511

WANG Baoxiang, YU Jialdeng, XU Bo, LIU Yan, XING Yungao, SUN Zhiguang CHIMing, SHI Shilai, BIAN Jianmin, XU Dayong（1.Lianyungang Agricultural Science Research Institute, Xuhuai District, Lianyungang 222006, China ; 2.Jiangsu Province Modem Crop Production Collaborative Innovation Center,Lianyungang 222006,China;3.Key Laboratory of Crop Physiology,Ecology- and Genetic Breeding, Ministry of Education, Nanchang 330045, China ; 4. Jiangxi Agricultural University, Nanchang 330045, China）. Identification and evaluation of drought tolerance for rice germplasm resources[J].Journal of Northern Agriculture, 2018, 46(5): 1-8.

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Identification and evaluation of drought tolerance for rice germplasm resources

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