Analysis of Agronomic Characters, Quality and Disease Resistance of New Wheat Varieties
Analysis of the status and problems of the registered wheat varieties will further improve the level of wheat breeding to provide a scientific basis.The data of 36 wheat varieties registered by the National Crop Variety Approval Committee from the irrigated land of north area of Huanghuai winter wheat and the northern China,Huanghuai poor dry and fertile farmland dryland regions in the year of 2011-2016 were selected as materials,the agronomic traits,quality and disease resistance were analyzed.The results showed that the average yield of the cultivars was 4.9％ higher than that of the control varieties,and the average increasing rate of 5 varieties (Yaomai 16,Wennong 14,Luyuan 502,Zhongmai 816 and Nongda 5181) were more than 8％.Efficient spike of registered varieties in north area of Huanghuai winter wheat,Huanghuai dryland,northern winter wheat regions were increasing year by year.The average spikelet number and 1 000-grain quality of the tested varieties in the northern winter wheat region showed a declining trend.The protein content of all varieties reached the national standard of wheat gluten quality.The frequency of wheat varieties with wet gluten content and stability time up to gluten standard were 75.0％ and 22.2％.While,52.8％ of the varieties had lower sedimentation value.The comprehensive analysis of quality traits showed that there was only one cultivar (Shunmai 1718) which reached the standard of strong gluten wheat.Similarly,5 varieties of Shiyou 20,Shannong 26,Jinmai 92,Jinnong 6 and Jinnong 7 reached the standard of medium strong gluten wheat,the overall quality needed to be further improved.The frequencies of resistant cultivars to wheat s~pe rust,leaf rnst and powdery mildew were 25.0％,11.1％ and 5.6％,respectively,while the cultivars showing susceptible to these diseases were 75.0％,88.9％ and 94.4％,respectively.Only 2 cultivars were resistant to both diseases,all cultivars were susceptible to wheat sharp eyespot,Fusariurn head blight and yellow dwarf.Breeding cultivars with multiple disease resistance genes should be strengthened.
NETL
NSTL
万方数据
维普
