CAJ | 학술논문

[目的]为育种选择、选配亲本及性状的早期鉴定提供理论依据.[方法]以S2×山梨(乔化)、S2×山梨(矮化)、S2、山梨、极矮化种质为材料,从叶片气孔密度、枝皮率、叶片厚度、栅栏组织厚度、栅海比、导管密度等指标来判断各种质的矮化性状.[结果]5种梨种质中生长势强的山梨枝皮率、叶片厚度、栅栏组织厚度及栅海比最小,而气孔密度和导管密度最大.生长势弱的梨极矮化种质枝皮率、叶片厚度、栅栏组织厚度、栅海比最大,而气孔密度和导管密度最小.各种质在气孔密度、枝皮率、叶片厚度、栅栏组织厚度、栅海比、导管密度之间存在差异.[结论]气孔密度、枝皮率、叶片厚度、栅栏组织厚度、栅海比以及导管密度可作为梨树体生长势早期鉴定的指标.
[목적]위육충선택、선배친본급성상적조기감정제공이론의거.[방법]이S2×산리(교화)、S2×산리(왜화)、S2、산리、겁왜화충질위재료,종협편기공밀도、지피솔、협편후도、책란조직후도、책해비、도관밀도등지표래판단각충질적왜화성상.[결과]5충리충질중생장세강적산리지피솔、협편후도、책란조직후도급책해비최소,이기공밀도화도관밀도최대.생장세약적리겁왜화충질지피솔、협편후도、책란조직후도、책해비최대,이기공밀도화도관밀도최소.각충질재기공밀도、지피솔、협편후도、책란조직후도、책해비、도관밀도지간존재차이.[결론]기공밀도、지피솔、협편후도、책란조직후도、책해비이급도관밀도가작위리수체생장세조기감정적지표.
[Objective] The aim was to provide a theoretical basis for breeding selection, matching parents and the identification of traits during early period. [Method] With S2×Shanli (Pyrus ussuriensis Maxim) (vigorous), S2×Shanli (dwarfing), S2, Shanli, super-dwarfing germplasm as the materials, the dwarfing traits of each germplasm were identified by indices including leaf stomata density, branch-cortex ratio, leaf thickness, palisade tissue thickness, palsade-spongy ratio and vessel density. [Result] Among five kinds of pear germplasms, Shanli with strong growth potential had the smallest branch-cortex ratio, leaf thickness, palisade tissue thickness and palisade-spongy ratio, but the largest stomata density and vessel density. On the contrary, super-dwarfing germplasm with weak growth potential had the largest branch-cortex ratio, leaf thickness, palisade tissue thickness and palisade-spongy ratio, but the smallest stomata density and vessel density. There was a difference in stomata density, branch-cortex ratio, leaf thickness, palisade tissue thickness, palisade-spongy ratio and vessel density for every germplasm. [Conclusion] Stomata density, branch-cortex ratio, leaf thickness, palisade tissue thickness, palisade-spongy ratio and vessel density can be used as indices of identification for pear growth potential in early period.