Study On Differences Of Yield And Quality Of Different Stone-used Ginkgo Clones

Ginkgo biloba L. is the only extant plant of Ginkgoales, and has high economic and scientific value. The relationship between photosynthesis & physiological characteristics of leaf of 10 stone-used ginkgo clones in five groups and seed yield & quality was systematic studied in this paper.The correlation and variation situations among the studied indexes were obtained. The 10 stone-used ginkgo clones were evaluated by subordinate function.The fine stone-used ginkgo clones were chosed by subordinate function values.The fine stone-used ginkgo clones were analysized on photosynthetic and physiological characteristics of leaf of 10 stone-used ginkgo clones.The results were as follows:1)The variation coefficient on yield per plant in the studied indexes was the biggest and up to 30%.The order of the variation coefficients on kernel nutritional composition contents indexes was fat content>soluble protein content>amylose content>total flavonoid>soluble sugar content.The variation coefficients on starch content, amylopectin content, terpene content were relativistic small.The order from big to small of the variation coefficients on seeds morphology indexes was single seed weight, single kernel weight, single stone weight, kernel thickness, stone mass/fruit mass (%),kernel-shape index, kernel width, nucleus-shape index, stone longth, seed longth, seed-shape index, kernel longth, seed width, stone thickness, stone width, kernel mass/stone mass(%).Above on, increasing seed or stone weight easily seceeds by choice.2)The 10 stone-used ginkgo clones were evaluated by subordinate function。The order of the 10 clones from good to bad on stone comprehensive quality was 16,46,21,27,68,63,55,54,51,12. The stone comprehensive quality of the Fozhi group including 16 and 46 and Maling group including 21 and 27 was fine, in which showed high-yield, big-seed, rich in biochemical components.The order of the 10 clones from good to bad on comprehensive quality was 68,21,27,16,46,63,51,54,55,12. The comprehensive quality of the Fozhi group including 16 and 46 and Maling group including 21 and 27 was fine, in which showed relative high-yield, big-seed, rich in biochemical components, and relatively long in leaf functional period.3) 16, 21, 27, 46 that's comprehensive quality was fine showed .Those were relatively high in Pn and in Chl content. The rest of the 10 clones were showed to the contrary in photosynthetic characters.4) 16, 21, 27, 46 that's comprehensive quality was fine showed that those were relatively high in soluble protein and soluble sugar contents and in SOD and POD activity and relatively low in H2O2 and MDA contents. The rest of the 10 clones showed to the contrary in metabolic transformation...