SX126苹果矮化砧在陕西区试表现

在陕西不同类型的苹果产区,以秋子作基砧,分别以杂交选育出的SX 126砧木和砧木M 26(CK)为中间砧,嫁接秋富1品种,进行连续8年的区域对比试验。结果表明,与对照M 26相比,SX 126砧木在河滩地、旱塬地及丘陵沟壑地均表现良好,耐旱性、抗偏斜能力优于M 26,耐寒性与M 26相当;对树体大小的控制能力较强,树冠表现矮化,树干周长、树高、树冠体积和新梢生长量均低于对照;嫁接品种早果性强,丰产,平均产量较对照提高23%以上;单果重和着色指数均优于对照,果实可溶性固形物含量、果肉硬度、果形指数和果实贮藏性与对照相当。说明SX 126砧木适合在陕西各类型苹果产区推广应用。

District performance test of SX126 apple dwarf rootstock in Shaanxi

SX126 apple dwarf rootstock,developed from Malus prunifolia Borkh crossed with M26,was tested for 8 years in districts of Shaanxi Province as inter-rootstocks with M.prunifolia Borkh as base-rootstock,Akita Fuji 1 as scion cultivar and M26 inter-rootstock as control.Results show that SX126 rootstock has good performance in flood land,Loess Plateau and hilly land.Compared with M26,SX126 has higher drought resistance and anti-leaning ability,equal coldness resistance;higher ability of controlling tree size,with lower trunk circumference,tree height,canopy volume and shoot length;earlier fruiting and better yield,average output being 23% higher than that of control;bigger fruit and better color index and equal soluble solids,flesh firmness,fruit shape index and storage ability.It shows that SX126 apple rootstock suits to be used in apple growing area of Shaanxi.