Yield Losses Associated with Different Levels of Stripe Rust Resistance of Commercial Wheat Cultivars in China

被引:15
|
作者
Zhou, Xinli [1 ]
Fang, Taohong [1 ]
Li, Kexin [1 ]
Huang, Kebing [1 ]
Ma, Chunhua [1 ]
Zhang, Min [1 ]
Li, Xin [1 ]
Yang, Suizhuang [1 ]
Ren, Runsheng [2 ]
Zhang, Pingping [2 ]
机构
[1] Southwest Univ Sci & Technol, Sch Life Sci & Engn, Wheat Res Inst, Mianyang 621010, Sichuan, Peoples R China
[2] Jiangsu Acad Agr Sci, Inst Crop Sci, Collaborat Innovat Ctr Modern Crop Prod Cosponsor, Nanjing 210014, Peoples R China
关键词
disease resistance; fungal pathogens; grain quality; resistance level; stripe rust; wheat; yield losses; F-SP TRITICI; GRAIN-YIELD; YELLOW RUST; PROTEIN-CONCENTRATION; SICHUAN BASIN; SP; TRITICI; LEAF RUST; QUALITY; DISEASE; FUNGICIDES;
D O I
10.1094/PHYTO-07-21-0286-R
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Wheat stripe rust is one of the most destructive diseases to affect wheat. Although the major resistant wheat varieties have made a great contribution to global food security, yield losses from stripe rust still occur in large wheat growing areas when climatic conditions are unstable. Despite this threat, resistance levels and yield losses of these elite wheat cultivars under wheat stripe rust infection have not been well studied. Based on this investigation of natural infection conditions over 2 years, analysis of the area-under-the-disease-progress-curves differentiated the susceptible cultivars Mianmai 367 (MM367; 788.59), Jinmai 47 (JM47; 1,087.71), and Avocet Susceptible (AvS; 1,314.59) from resistant cultivars Xikemai 18 (XKM18; 177.50) and Xiaoyan 6 (XY6; 545.67). Stripe rust resulted in a 2-year mean yield loss of 32% for all tested varieties. The susceptible varieties JM47, AvS, and MM367 lost 64, 55, and 21% of grain yield, respectively. On the contrary, rust-resistant cultivars XKM18 and XY6 lost only 11 and 28%, respectively. In addition, stripe rust resulted in reduced kernel hardness, flour yield, and flour whiteness. Dough and gluten properties were also affected. Overall, results revealed that the grain yield and quality loss values of the resistant wheat cultivars were less than in the susceptible cultivars. Disease-resistant cultivars such as XKM18 should be promoted and recommended for application. It may also be suggested that growing a susceptible variety such as MM367 could be feasible in combination with fungicide application under high disease pressure.
引用
收藏
页码:1244 / 1254
页数:11
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