Resistance of Pre-harvest Sprouting of Wheat Cultivars Planted in the Valley of Middle and Lower Reach of Yangtze River and Comparison of the Identification Methods
Author(s): ZHU Dongmei, ZHANG Xiaoxiang, WANG Ling, FANG Zhengwu, JIANG Wei, ZHANG Xiao, GAO Derong, Lixiahe Institute of Agricultural Sciences/Key Laboratory of Wheat Biology and Genetic Breeding in the Middle and Lower Yangtze River, Ministry of Agriculture, College of Agriculture, Yangtze University
Pages: 944-949
Year: 2014 Issue: 7
Journal: Journal of Triticeae Crops
Keyword: Wheat; Cultivar; Pre-harvest sprouting; Resistance; Identification method;
Abstract: In order to provide guidance for the selection of cultivars for the valley of middle and lower reaches of Yangtze River,Pre-harvest Sprouting resistance of 20main cultivars were studied by germination test of spike,whole seed,half seed,and whole seed at 10days and 30days after harvesting.The results indicated that there was significant difference on PHS resistances among those cultivars,Zhengmai 9023was highly susceptive to PHS,Ningmai 17,Ningmai 19,Zhenmai 9and other 3cultivars had moderate resistance to PHS,and 13cultivars such as Yangmai 18,Yangmai 20,Yangmai 22,Yangmai 16and Ningmai 16had strong resistance to PHS.The results by germination rate for spike and seed of 20cultivars were significantly and positively correlated,and there was no significant difference in the average germination rate of spike and seed.It indicated that both spike and seed ger-mination could be used to test the resistance to PHS.As the germination rate for the seed harvested at the day and that at 10days later were highly consistent and they were significantly and positively correlated,which suggested that sprouting test could be done using seeds harvested in this period.The germination rates of all red-grain wheat at 30days after harvest were significantly increased,probably due to the seed dormancy had been broken.The germination rate of 18red-grain wheat of 20by halfgrain method was significantly higher than that by whole-grain method.It suggested that the seed coat had strong inhibitory effect on PHS.The germination rate of white-grain wheat Zhengmai 9023was no significant difference between seeds at the harvest day to one month late,and between the whole-grain and half-grain method.It indicated that this cultivar had nearly no dormancy,and the seed coat restriction to pre-harvest sprouting was less.
Pages: 944-949
Year: 2014 Issue: 7
Journal: Journal of Triticeae Crops
Keyword: Wheat; Cultivar; Pre-harvest sprouting; Resistance; Identification method;
Abstract: In order to provide guidance for the selection of cultivars for the valley of middle and lower reaches of Yangtze River,Pre-harvest Sprouting resistance of 20main cultivars were studied by germination test of spike,whole seed,half seed,and whole seed at 10days and 30days after harvesting.The results indicated that there was significant difference on PHS resistances among those cultivars,Zhengmai 9023was highly susceptive to PHS,Ningmai 17,Ningmai 19,Zhenmai 9and other 3cultivars had moderate resistance to PHS,and 13cultivars such as Yangmai 18,Yangmai 20,Yangmai 22,Yangmai 16and Ningmai 16had strong resistance to PHS.The results by germination rate for spike and seed of 20cultivars were significantly and positively correlated,and there was no significant difference in the average germination rate of spike and seed.It indicated that both spike and seed ger-mination could be used to test the resistance to PHS.As the germination rate for the seed harvested at the day and that at 10days later were highly consistent and they were significantly and positively correlated,which suggested that sprouting test could be done using seeds harvested in this period.The germination rates of all red-grain wheat at 30days after harvest were significantly increased,probably due to the seed dormancy had been broken.The germination rate of 18red-grain wheat of 20by halfgrain method was significantly higher than that by whole-grain method.It suggested that the seed coat had strong inhibitory effect on PHS.The germination rate of white-grain wheat Zhengmai 9023was no significant difference between seeds at the harvest day to one month late,and between the whole-grain and half-grain method.It indicated that this cultivar had nearly no dormancy,and the seed coat restriction to pre-harvest sprouting was less.
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