壳寡糖在晚熟甜橙塔罗科血橙新系生产中的应用研究

Research on Application of Chito-oligosaccharide in the Production of Late-maturing Tarocco Blood Orange Nucellar Line

壳寡糖(chito-oligosaccharide,COS)被认为具有促进植物生长发育,抑制病毒、细菌、真菌等作用,作为一种新型的多功能生物农药,在植物生长调节及诱导植物抗逆性、抗病性等方面显示了极大的应用潜力。试验研究发现,在晚熟甜橙塔罗科血橙新系生产中喷施壳寡糖50 mg.L-1,单株产量提高13.9%,可溶性固形物含量增加0.5个百分点,明显增强树势,提高抗旱、抗寒能力,促进生长,提高着果率,减少裂果和落果,对提高产量和改善果实品质效果明显。

It is known that chito-oligosaccharide（chito-oligosaccharide,COS） promotes plant growth,and inhibits virus,bacteria and fungi.As a new biological pesticide,the chito-oligosaccharide has great potential in regulating the plant growth and inducing stress and disease resistance.This experiment showed that treatment with 50 mg·L-1 5% chito-oligosaccharide increased the average yield of late-maturing tarocco blood orange nucellar line and the content of soluble solids by 13.9% and 0.5%,respectively.The treatment could promote growth and vigor,enhance resistance to cold and drought stresses,increase fruit-bearing rate,reduce the physiological fruit drop and increase fruit productivity and quality.