Genetic Analysis Of Main Quality And Seed Traits Of Watermelon

Watermelon (Citrullus lanatusï¼›2n=2x=22) originated in Africa, belong to the gourd family(Cucurbitaceae) annual trailing herbs. Watermelon taste sweet, crisp, juicy flesh, in addition tocontaining sugar, also contains rich minerals, vitamin, amino acid, malic acid and other organicacids and alkali substances, became cool them down. Almost all over the world can widelyplanting watermelon, occupy the important position in world fruit market. So the main qualitytraits and seed genetic regularity of watermelon analysis, develop a nutrition and health, and with ataste of watermelon is breeding workers an important goal.This test in heihe city xinhui district XingFu Township love for Russian export base insidegreenhouse watermelon W186490chosen as the female parent, LSW-177as male parent. Themixed hybrid combinations, build group of six generations. Get the F2generation of temporarygroup is made up of276per plant. This study respectively the watermelon center and edge offructose, cane sugar, reducing sugar content, measured the flesh hardness, fruit hardness, thickness,soluble solids content, seed length, and hundred grain weight. Using DPS V7.55software andGaiJun zhengyi six generations of genetic analysis software for watermelon main quality andgenetic law of seed traits analysis. To related research to provide theoretical basis for breeding ofwatermelon.By studying the following conclusions:1. Through the analysis results showed that the watermelon in fructose and reducing sugarcontent in F2population characterized by continuous change present normal distribution, hasobvious quantitative character conforms to the controlled by polygene genetic characteristics. Andwatermelon sugar kurtosis and skewness is bigger, the distribution of the F2population in a certaindegree of partial separation phenomenon.2. Through the genetic analysis of the model show that watermelon center soluble solidscontent and the thickness of the pulp hardness and peel are in line with the0C model, is more thangenetic model its genetic effect is positive; Watermelon edge of soluble solids content accord withE-1-1model, is more than genetic model is controlled by two pairs of genes; Edge of watermelonpulp hardness accord with D-4models, is more than genetic model is controlled by1for negativecompletely dominant gene.3. Through the genetic analysis of the model shows that the length of the watermelon seed isaccord with D-3models, is more than genetic model is controlled by1to fully manifest the maingene; Watermelon seed width and seed kernel weight are all accord with D-2models, is more thangenetic model is controlled by1for additive main genes.