Endogenous Hormones, Nutritive Material and Phenolic Acid Variation in Cuttings of Japanese Larch During Rooting
The relations among rooting traits and contents of endogenous hormone,total phenolic acid,nutrient substance of four elite Japanese larch (Larix kaempferi) clones were studied. The results showed that: (1) There were significant differences in the rooting ability of cuttings amongst different clones. ' Rikuanl7-3-1' and 'Rifu27-3-l' were easy rooting clones, which the rooting rate reached 90%. While 'Ricaol03-3-l' and 'Ricao82-4-3' was difficult rooting clones,which the rooting rate was lower than 20%. (2)The content of ABA in cuttings was increasing with time prolonging, and significant differences had been found between difficult rooting clones and easy rooting clones,there was a strong correlation between ability and ABA content. The content of Z and total phenolic acid was decreasing with time prolonging,and had a negative influence on the rooting. The content of total nitrogen was decreasing until stabilization withthe time prolonging, while no significant relations with rooting ability. (3) (IAA + Z)/ABA was decreased with the time prolonging,and the rate in easy rooting clones was lower than that in difficult rooting clones.(IAA + Z)/ABA and total phenolic acid may be used as a standard to express the rooting ability of Japanese larch.
Japanese larch (Larix kaempferi)clonescuttingendogenous hormonesnutritive materialphenolic acid
NETL
NSTL
万方数据
维普
