%A WANG Yin, FENG Zhi-Wei, GE Chuan, ZHAO Jia-Jia, QIAO Ling, WU Bang-Bang, YAN Su-Xian, ZHENG Jun, ZHENG Xing-Wei %T Identification of seedling resistance to stripe rust in wheat-Thinopyrum intermedium translocation line and its potential application in breeding %0 Journal Article %D 2021 %J Acta Agronomica Sinica %R 10.3724/SP.J.1006.2021.01082 %P 1511-1521 %V 47 %N 8 %U {https://zwxb.chinacrops.org/CN/abstract/article_7152.shtml} %8 2021-08-12 %X

There are abundant disease resistance resources in relative genus of wheat. The translocation line ZH811 derived from progeny of wheat and Th. intermedium hybrids, was selected for evaluation of stripe rust resistance. A series of stripe rust races such as CYR29, CYR31, CYR32, CYR33, CYR34, Suwon-4, Suwon-5, and Suwon-7 were used to record stripe responses at seedling stage. Agronomical traits, quality traits, and molecular cytogenetic analysis were also performed. Moreover, specific molecular markers located on alien segment was developed by RAPD method. The results indicated that ZH811 was highly resistant to all tested races at seedling stage. And it further proved that the resistance was conferred by a small-fragment-translocation from the Ee genome on 5DS chromosome. The SCAR markers and black awn traits could be used to trace the translocation fragment. ZH811 possessed similar agronomic traits with the commercial cultivars in the Yellow-Huaihe-Haihe Rivers region of wheat. The translocation fragment may be associated with the increase of grain number. The components of the Glu-1 were good-quality subunits, including 1, 17+18, and 5+10, and each quality index met the standard of moderate gluten. The alien chromosomal fragment had no obvious linkage drag to grain quality performance. Based on these findings, ZH811 could be used as a potential material for wheat breeding in high yield, disease resistance, and high quality.