山核桃果实生长发育规律

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1、维普资讯http://www.cqvip.com浙江林学院学报2008，25(4)：527—531JournalofZhejiangForestryCollege山核桃果实生长发育规律解红恩，黄有军薛霞铭，许长寿，刘力(1．浙江林学院浙江省现代森林培育技术重点实验室，浙江临安311300；2．浙江省临安市马啸乡林业站，浙江临安311323)摘要山核桃Caryacathayensis果实生长成熟过程可分成2个阶段：5月初至8月初是果实增大物质增长阶段，其中6—7月是果实快速生长期．至8月初果实生长基本稳定。8—9月是种仁储藏物质的积累和转化阶段；在种仁成熟过程中．山核桃

2、种仁粗脂肪质量分数不断升高，采收时达最高值690．2g-kg～；粗蛋白和可溶性糖不断减少，分别从8月5目的117_38和56．05nqg．g一降至采收时的最低值93．63和19．67mg·g～；果实成熟过程中种仁可溶性糖和粗蛋白不断转化成为粗脂肪．种仁粗脂肪与粗蛋白和可溶性糖呈极显著的负相关，粗脂肪与粗蛋白的相关系数为一0．9913(P<0．o1)．与可溶性糖的相关系数一0．9565(P<0．o1)。图1表3参21关键词：植物学；山核桃；果实成熟；粗蛋白；糖类；粗脂肪中图分类号：$718．4文献标志码：A文章编号：1000—5692(2008)04—0527—05Gr

3、owthanddevelopmentoftheCaryacathayensisnutXIEHongen，HUANGYou-jun，XUEXia—ming，XUChang—shou，LIULi(1．TheKeyLaboratouforModemSilviculturalTechnologyofZhejiangProvince，ZhejiangForestE~College，Lin’an311300，Zhejiang，China；2．MaxiaoForestStationof[An’anCity，[An’an311323，Zhejiang，China)Abstract：C

4、aryacathayensisisfamousbecauseitsnuthasrichnutrition，especiallyinoilandprotein．Weexplorethenut’sgrowthprocessinordertoobtainthelawofoilaccumulation．FromMaytoSeptemberin2006，wepicked150—300nutsfrom6sampletreeseach7—10days．Then，wedetermineitsdiameter，freshanddryweight，theweightrateofkerne

5、ltoshell，crudeprotein，solublesugar，andcrudefat．Re—sultsshowedthatdevelopmentoftheCaryacathayensisnutthroughoutitsgrowingseasonisdividedintotwodistinctphases．PhaseIoccurredfromearlyMaytoearlyAugust．DuringthisphasetheC．cathayensisnutenlargedwiththefastestgrowthinJuneandJulyandcametofullsi

6、ze．PhaseⅡoccurredfromearlyAugustuntilharvestinearlySeptember，whereinthekerneldevelopedandfilledoutwithnutrientsaccumulatingandtransforming．Inthisphase，significantnegativecorelationswerefoundbetweencrudeproteinandcrudefat(r=一0．9913，P<0．01)andbetweensolublesugarandcrudefat(r=一0．9565，P<0．0

7、1)withproteincontentdecreasingfrom117．4to93．6mg‘g～．solublesugardecreasingfrom56．1to19．67mg·g～．andcrudefatcontinuouslyincreasingfrom33．9％to69．0％．SoweshouldprovideadequatenutritiontomaintainthevitalityofleavesinJuneandJuly，topostponeharvestingisbeneficialtoenhancethekernel’Soutpu