This paper expounded the current situation and genetic mechanisms of short-vine watermelon breeding from the aspects of material sources,breeding process and genetic characteristics of F_1,hoping to provide a theoreti...This paper expounded the current situation and genetic mechanisms of short-vine watermelon breeding from the aspects of material sources,breeding process and genetic characteristics of F_1,hoping to provide a theoretical basis for short-vine watermelon breeding,and breeding materials for watermelon planting innovation,as well as new opportunities for high-quality and high-yield watermelon.展开更多
The dwarf vine and small fruit watermelon, referred to as ‘dsh' in this study, is a natural mutant of the ordinary watermelon, ‘Hanxuan Lvyuan'.Morphological assessment indicated that its main vine length, i...The dwarf vine and small fruit watermelon, referred to as ‘dsh' in this study, is a natural mutant of the ordinary watermelon, ‘Hanxuan Lvyuan'.Morphological assessment indicated that its main vine length, internode length, and single-fruit weight were significantly lower than those of the ordinary watermelon(P < 0.05). After crossing the mutant with two ordinary watermelons, following by inbreeding the F_1 and backcrossing(BC)F_1 to ‘dsh', the F_1, F_2, and BC generations were obtained. Genetic analysis of vine type and single-fruit weight showed that the F_1 generation consisted of long-vine plants, with single-fruit weight significantly higher than that of the ordinary parent watermelon(P < 0.05). The long and short vine plant ratios of the F_2 and BC populations conform to the Mendel's segregation ratios of 3:1 and 1:1(P > 0.05), respectively. It was suggested that this dwarf and small fruit mutation was a single recessive gene trait that followed a Mendel's inheritance.展开更多
文摘This paper expounded the current situation and genetic mechanisms of short-vine watermelon breeding from the aspects of material sources,breeding process and genetic characteristics of F_1,hoping to provide a theoretical basis for short-vine watermelon breeding,and breeding materials for watermelon planting innovation,as well as new opportunities for high-quality and high-yield watermelon.
基金supported by the Project of Science and Technology Research Projects of Education Department of Henan Province(2008A208002,15A180011)
文摘The dwarf vine and small fruit watermelon, referred to as ‘dsh' in this study, is a natural mutant of the ordinary watermelon, ‘Hanxuan Lvyuan'.Morphological assessment indicated that its main vine length, internode length, and single-fruit weight were significantly lower than those of the ordinary watermelon(P < 0.05). After crossing the mutant with two ordinary watermelons, following by inbreeding the F_1 and backcrossing(BC)F_1 to ‘dsh', the F_1, F_2, and BC generations were obtained. Genetic analysis of vine type and single-fruit weight showed that the F_1 generation consisted of long-vine plants, with single-fruit weight significantly higher than that of the ordinary parent watermelon(P < 0.05). The long and short vine plant ratios of the F_2 and BC populations conform to the Mendel's segregation ratios of 3:1 and 1:1(P > 0.05), respectively. It was suggested that this dwarf and small fruit mutation was a single recessive gene trait that followed a Mendel's inheritance.
