苹果矮化砧木新品种‘冀砧1号’

‘冀砧1号’是由‘SH40’的实生后代中选育出的苹果矮化砧木。嫁接基砧及品种接穗亲和性良好，成活率90%以上。作中间砧嫁接‘天红2号’，定植翌年始花，开花株率可达70%，4年生树高2.56 m，产量可达27 000 kg ? hm-2。成龄树树高是对照SH40的75%左右，枝展是SH40的75% ~ 85%，中短枝占总枝量的80%以上；果实平均单果质量221.9 g，可溶性固形物含量14.5% ~ 16.5%，硬度8.67 kg ? cm-2，产量可保持在45 000 ~ 52 500 kg ? hm-2。适宜在河北省中南部或气候类似的区域应用。

A New Apple Dwarfing Rootstock Cultivar‘Jizhen 1’

‘Jizhen 1’is a new apple dwarfing rootstock cultivar selected from the seedling progenies of‘SH40’. It had a good grafting affinity with rootstock and cultivar，the survival rate is over 90%. Grafting on the inter-rootstock of Fuji apple tree‘Tianhong 2’will flower in the next year，the flowering plant rate can reach 70%. The average height of the 4 years old tree is 2.56 m，and the yield can reach 27 000 kg ? hm-2. The yield can be maintained at 45 000–52 500 kg ? hm-2 in high yield year. The average fruit weight is 221.9 g，the hardness is 8.67 kg ? cm-2，and the soluble solids content is 14.5%–16.5%，which is suitable for application in the south-central part of Hebei Province or in similar climate areas.