The Heredity of Resistance to Viruses and Its Relation to Yield Characters in Potato

doi:10.3321/j.issn:1000-7091.1993.01.005

Abstract

Abstract: The heredity of resistance to potato leaf roll and mosaic viruses and its relation to yield characters in potato was studied.The results showed that the genetic correlation between the resistance and the population yield was not significant.The resistance could indirectly keep high and stable yield property of potato population by principally ensuring the normal growth and development of the potato plants.The heredity of potato in the resistance to leaf roll virus, plant height, stem thick, the effective plant percentage and the main yield characters was decided mainly by the additive gene effect of their parents, and the general combining 'ability had a large difference in the different characters in a same parent.Therefore, it is very important to coordinately select all object characters in resistance and high yield breeding.The selection of effective plant percentage and stem thick can improve the resistance to viruses in population and the yielding ability.The additive effect and non-additive effect simultaneously play a role in the heredity of the resistance to potato mosaic viruse.There are a large genetic advance and selective potency in the resistance to potato viruses, the effective plant persentage and the yield of potato populations.

Key words: Potato, Resistance to virus, Yield character, Heredity

Li Wengang, Gong Xiufeng, Wang Linping, Zhang Huimin, Zhao Xiuyan. The Heredity of Resistance to Viruses and Its Relation to Yield Characters in Potato[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1993, 8(1): 23-28. doi: 10.3321/j.issn:1000-7091.1993.01.005.

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