| Disease resistance and drought tolerance of wheat resistant sources derived from wide hybridization |
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| DOI：10.7606/j.issn.1000-7601.2014.05.006 |
| Key Words: wheat wide hybridization incorporation of resistance into cultivar resistance to stripe rust drought tolerance agronomic traits |
| Author Name | Affiliation | | XU Xin1,2, YUAN Feng-ping1,2, MU Jing-mei1,2, XUE Wen-bo1,2, WANG Qi-lin1,3, WU Jian-hui1,3, HUANG Li-li1,3, KANG Zhen-sheng1,3, HAN De-jun1,2 | (1.西北农林科技大学旱区作物逆境生物学国家重点实验室， 陕西 杨凌 712100； 2.西北农林科技大学农学院， 陕西 杨凌 712100； 3.西北农林科技大学植物保护学院， 陕西 杨凌 712100) |
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| Abstract: |
| Twenty wheat advanced lines with stable disease resistance and agronomic traits were obtained by crossing and backcrossing between Zhengmai 9023 and Yumai 66 and the stable distant hybridization from wide hybridization of wild emmer and wild oats, respectively, after screening and identification seven times. wheat advanced lines were evaluated for the presence resistance in a field with two types of disease nursery respectively: one is artificial nursery inoculated with two prevalent races (CYR32 and CYR33) in Yangling, Shaanxi Province; the other is a natural infection of Pst in Tianshui, Gansu Province. Meanwhile, the seedlings of the cultivars were inoculated with the four races CYR32, CYR33, CYR31 and CH42 in the greenhouse, respectively. The resistance genes were postulated using molecular markers for Yr5, Yr9, Yr10, Yr15, Yr17, Yr18 and Yr26 in combination with resistance spectra. Germination drought stress experiment of wheat advanced lines was used to evaluate its drought resistance. The agronomic traits were investigated and evaluated. The results of disease resistance, drought resistance and agronomic characteristics showed that: Zhengye-2, Zhengye-3, Zhengye-6, Yuye-1, Yuye-2, Yuye-4, Yuye-5, Yuye-6 were the 8 of 20 wheat advanced lines in the experiment with good disease resistance, drought resistance and comprehensive characters, and could be used as parent resistance material. The results suggest that under the guidance of good disease resistance, drought tolerance and synthetical properties breeding goal, Zhengmai 9023 and Yumai 66 were used as gene accumulation capacity, combining pedigree selection method with molecular markers to assist selection breeding, in order to improve and innovate variety Zhengmai 9023 and Yumai 66. |
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