轻霜后的甘蔗品质变化与耐寒性评价.pdf

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1、南方农业学报JOURNALOFSOUTHERNAGRICUI。TUREISSN2095—1191；CODENNNXAABhttp：／／www．nfnyxb．coinDOI：10，3969／j：issn．2095-1191．2012．10．1495轻霜后的甘蔗品质变化与耐寒性评价杨荣仲·，梁强，，周会·，桂意云-，贤武，，黄文晔z，何雪丹2，覃丽藩1，廖诗童1(1中国农业科学院甘蔗研究中心依业部广西甘蔗生物技术与遗传改艮重点实验室／广西农业科学院甘蔗研究所，广西甘蔗遗传改良重点实验室，南宁530007；2桂林市农业科学研究所，广西桂林541006)

2、摘要：【目的】研究霜冻后甘蔗品质性状变化特点及形态受害与品质变化问的关系，为选育耐寒品种提供科学依据。【方法】选用国内主要育种机构近年来选育的19个甘蔗新品种(系)及目前我国蔗区大面积种植的耐寒性较差的ROC22，在广西霜冻易发地区桂林雁山进行耐寒试验。【结果】试验期间试验地霜冻危害程度较低，甘蔗形态受害表现为危害较轻的一级，但霜冻后的甘蔗品质性状明显受到影响，甘蔗蔗糖分和理论产糖量分别下降了9．09％和10．31％，且出现两个下降低谷。进一步分析表明，霜冻后的甘蔗形态受害表现与品质的受害表现不存在相关。【结论】在轻霜冻条件下，宜在形态评价基础上

3、用霜冻后第2～4周的理沦产糖量高低进行甘蔗耐寒评价。关键词：甘蔗；轻霜冻；耐寒评价；品质性状中图分类号：$556，1文献标志码：A文章编号：2095-1191(2012)10-1495一06ChangesinstalkqualityandevaluationoncoldtoleranceofsugarcaneunderlightfrostYANGRong—zhong1，LIANGQiang1，ZHOUHutl，GUIYi-yunl，XIANWul，HUANGWen—ye2，HEXue—dan2，QINLi—fanl，LIAOShi-tong1(I

4、SugarcaneResearchCenter，ChineseAcademyofAgriculturalSciences／GuangxiKeyLaboratoryofSugarcaneBiotechnologyandGeneticImprovement，MinistryofAgriculture／SugarcaneResearchInstitute，GuangxiAcademyofAgriculturalSciences／GuangxiKeyLaboratoryofSugarcaneGeneticImprovement，Nanning530007

5、，China；2GuilinAgricultureResearchInstitute，Guilin，Guangxi541006，China)Abstract：【Objective】Thisresearchaimedtostudytherelationshipbetweenqualitychanges，characteristics，andnorphologicaldamagcofsugarcaneunderlightfrostconditioninordertoprovidetheoretiealreferencesforbreedingcold

6、—tolerancesugarcanevarieties．【Method】Thecold—intolerantsugareanevarietyROC22，themainly—cultivatedsugoreanevarietvinChina．alongwith19othcrnewsugarcanevarietiesbredbydomesticsugarcanebreedinginstitutions，weretestedand。bservedinfrostyareasofYanshan，GuilinCityofGuangxi．[Result】Th

7、eresultsshowedthatwithlightfrostoccurrence，themorphologicaltraitsofsugarcaneshowedonlyslightdamage；however，thequalitytraitsofsugarcanewereafiectedsignificantlywhenthesucrosecontentandtheoreticalrecoverablesugar(TRS)ratedecreased9．09and10．31％．respectively，withtwodecreasingpoin

8、ts．Furtheranalysisfromtheresearchresultsindicatedthattherewasnocorre