Identfication and Inheritance of Resistance to Powdery Mildew in Watermelon

doi:10.7668/hbnxb.2008.04.009

Abstract

Abstract: The cross of watermelon PI482246,which is resistant to powdery mildew disease, and Zhongxin 1,which is susceptible to powdery mildew disease, were used to construct F₂, BC_1.1 and BC_1.2progeny populations?The inheritance of resistancewas analyzed with Podosphaera xanthii race-France purified and identified from a collection of powdery mildew using spore spraying method in greenhouse. The results of cross tests indicated that the resistance carried by PI482246 to powdery mildew race-France was controlled by a single recessive gene and the resistance was incomplete recessive.

Key words: Watermelon, Powdery mildew, Physiological race identification, Resistance inheritance

CLC Number:

S651.03

XU Xiang-li, GONG Guo-yi, GUO Shao-gui, XU Yong, LU Xiang-yang, PENG Zhen-xing, ZHANG Hai-ying. Identfication and Inheritance of Resistance to Powdery Mildew in Watermelon[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(4): 37-40. doi: 10.7668/hbnxb.2008.04.009.

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