京白梨”授粉树S基因型鉴定及对果实品质影响

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【Abstract】Using9typesof‘JingbaiPear'polinationtresasresearchmaterials，thisstudyidentifiestheirS-genotypes andevaluatestheirsuitabilitybasedonfloweringsynchrony，polenquantitypolengerminationrate，andfruitqualityThe resultsidicatethat’ZhongliNo.2’，Nanguo Pear‘，and‘JianbaPear'haveahighdegreeofcompatibility with the floweringperiodof‘JingbaiPear’.Pollengerminationratesvariedsignificantly.For example，the‘PingguoPear‘has the pollen germination rate of 91.49 % ，the'Xinshiji Pear'79.08 % ，the‘Yali Pear‘72.76%，and the‘Zimu Pear‘ 72.41% ，thesefour varietieshavingahigherpollen germinationrates.Fruitqualityanalysisrevealed thatthe‘JingbaiPear‘ polinatedbyJinshuiNo.hasthelargestcore-to-fruitratio，whilethepearpollinatedby‘JianbaPear‘achievesthehighest soluble solids content （16.16 % ），the maximum flavonoid content （1o.67 mg/g） is observed in the pear pollinated by JinshuiNo.2，thepearpollinatedby‘Yaliear‘producesthehigheststonecellconcentration （6.97mg/g），thepearpollnated by‘Zhongli Pear No.2'shows the greatest firmness （8.53kg/cmz） ），and the'JingbaiPear‘pollinated by‘ZimuPear‘ has the highest titratable acidity （0.17% ）and reducing sugar content 9.63% ）.There was no significant difference in VC content amongdiffrentpolinationtree varieties.Basedontheaboveresults，‘PingguoPear’，'XinshijiPear’，'ZimuPear‘and ‘Yali Pear‘are recommended as optimal pollinizers for‘Jingbai Pear'.

【Keywords]JingbaiPear;pollinationtree；selectionoffinevarieties;identificationofS-genotypes;pollngermination rate; pollen quantity; fruit quality

[中图分类号］S792.99 [文献标识码］A [文章编号]1674－3229（2025）02-0100-07

0 引言

梨属于自交不亲和树种，大部分品种自花授粉坐果率低甚至不结果，并存在异花授粉不亲和现象。（剩余8829字）