摘要
[目的]研究甜柿嫁接苗地上部分和根系表型性状差异,可在形态学上揭示接穗对砧木生根的影响及砧穗间互作,为甜柿嫁接砧木选择和栽培推广提供理论依据。[方法]采用方差分析、多重比较及主成分分析等方法,对27种1年生甜柿嫁接组合,3种2年生嫁接组合和3种2年生中间砧嫁接组合的地上部分和根系形态指标进行多样性分析和综合评价。[结果]不同甜柿嫁接苗地上部分和根系形态指标组合间存在差异性;同种砧木下(老鸦柿除外),嫁接‘次郎’或‘阳丰’的嫁接苗根系鲜质量、根系干质量、根系长度、根系表面积及根系体积优于嫁接‘太秋’或‘富有’的嫁接苗,表型性状综合评价结果也如此;除含水率外,地上部分和根系表型指标均存在极显著或显著相关,地上部分鲜质量与地上部分干质量是影响根鲜质量、根干质量、根系长度、根系表面积和根系体积的主导因子,株高和接穗直径则是影响这些根系表型性状的重要因子;山东产君迁子和浙江柿嫁接‘富有’的2年生嫁接苗根系有衰退迹象,利用‘次郎’作中间砧可明显改善其早期生根状况。[结论]研究结果初步反应了甜柿嫁接苗接穗对砧木生根的影响,且影响或与嫁接亲和性相关。砧木根系和接穗生长存在紧密的相互作用。利用‘次郎’作中间砧,或可改善浙江柿、山东产君迁子嫁接‘富有’不亲和。
The difference of shoots and roots phenotypic in persimmon grafted seedlings reflects the influence of scion on the growth of roots and interaction existed between scion and rootstock. It may provide evidences for rootstock selection and cultivation on persimmon. The shoot and root phenotypic traits of 27 one-year-old grafted combinations,3 two-year-old grafted combinations and 3 two-year-old grafted combinations with interstock were analyzed using variance analysis,multiple comparisons and principal component analysis. The results showed that there were significant differences for shoot and root phenotypic traits among grafted combinations; Under same rootstock,grafted seedlings with Diospyros kaki ‘Jirou＇or D. kaki ‘Youhou ＇scions had higher root fresh,dry weight,root length,root area and root volume than D. kaki‘Taishu＇or D. kaki‘Fuyu＇scions,on the eight rootstocks（ without D. rhombifolia Hemsl）,and the comprehensive evaluation also revealed similar results. In addition to moisture content,the shoot and root phenotypic traits had significantly correlation,thereinto,the shoot fresh weight and dry weight were the dominant factors,plant height and scion diameter were important factors on roots fresh weight,roots dry weight,root length,root area and root volume. Two-year-old grafted seedlings of D. lotus or D. glaucifolia graf-ted onto D. kaki ‘Fuyu＇scion showed weakening roots phenotypic traits,but it was improved with D. kaki‘Jirou＇interstock in the early. It is concluded that scion had influence on rootstock roots,and maybe associate with the graft compatibility,there existed close interaction between scion and rootstock roots. It is estimated taking D. kaki‘Jirou＇as interstock may improve the affinity of D. lotus or D. glaucifolia grafted onto D. kaki‘Fuyu＇scion.
出处
《林业科学研究》
CSCD
北大核心
2016年第1期85-92,共8页
Forest Research
基金
国家林业局“948”引进项目(2013-4-26)
浙江省“果品农业新品种选育”重大科技专项重点项目(2012C12904-10)
关键词
甜柿
嫁接
根系
互作
中间砧
persimmon
graft
root system
interaction
interstock
