| In order to study the diverse varieties of the Triticum aestivum ssp. yunnanense King,also called Yunnan hulled wheat, possibly carried the known and unknown stripe rust resistance genes, this study has given a preliminary molecular inspection for 37 Yunnan hulled wheat by using 38 SSR primers which were linked to 51 known stripe rust resistance genes. The results indicated that it had the rich loci linked to the known stripe rust resistance genes including Yr9, Yr10, Yr29, Yr41, YrTp1, YrSM139, YrSP, YrGn6, Yrvav B1, YrSyria, YrXu, YrM8003 and YrCD etc.; There were 24 accessions which accounted for about 65% of all test materials contained identical or similar maker to the Chinese Spring and linked to the Yr18 by Xgwm295 primer. The fragments of stripe rust resistance related genes with Yr9 and YrM8003 from Rye, YrTp1 and YrTp2 from Thinopyrum intermedium, YrHy from Psathyrostachys huashanica and Yr88375 and YrZhong22 from Thinopyrum ponticum were detected in Yunnan hulled wheat by 8 SSR primers of Xgwm582, Xwmc477, Xwmc364, Xgwm429, Xwmc702, Xwmc438, Xwmc810 and Xgdm116.This results indicated that Yunnan hulled wheat may contain new stripe rust resistance genes,and we should pay attention to their study on stripe rust resistance gene discovery and location. Many Yunnan hulled wheat were characterized to have slow stripe rust resistance gene Yr18, these wheat materials should were regarded as an important materials and utilized in Yunnan wheat breeding project. |
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