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1、华南双季超高产水稻分蘖盛期生理性状研究福建农业19(4):198～20】,2004FujianJournalofAgriculturtzScieme5文章编号:1008—0384(200,t)04一O198—04华南双季超高产水稻分蘖盛期生理性状研究陈友订,万邦惠,张旭(1.广东省农业科学院水稻研究昕.广东广州510640:2.华南农业大学农学院.广东广州510640)摘要:在早,晚季水稻分蘖盛期.测定了华南稻区6个不同类型超高产水稻品种(组合)的干物重,功能叶叶绿素(a十b)含量,叶面积指数,根系活力和净光合速率等主要生理性状.并应片I数
2、理统汁方法分析J品种(组合)间各性状的差异显着性及对干物重的综合作斤j.以及早,晚季同生态环境对上述生理性状的影响.提出华南双季超高产水稻动态洙型育种中分蘖盛期适宜的生理指标缱值为:功能叶叶绿索(a+b)含量早季3.9～4.2mg?g～,晚季4.0mg?g一.根系活力早季270~348Mg?g一?h..,晚季318g?g?h?叶面积指数早季2.4～2.7,晚季3.8.功能Ⅱt净光合速率早季24.8/~naol?m?s,晚季23.3p-mol?m?s一.关键词:超高产水稻:株型;分蘖盛期;生理特性中图分类号:S5l1.01文献标识码:APhy
3、siologicalcharacteristicsofSouthChinadoublecroppingsuperhighyieldingriceatactivetilleringstageCHENYou—ding.WANBang—hui!.ZHANGXu'(1.RRResear~hInstitute.Guangdong4(ademyAgriculturalSciem'es.(Juangzhou,Guangdong510640.China;2.CollegeofAgriculture.SouthChina^griculturalgniz,er
4、sit3,.Guangzhou,Guangdong510640.ChinK)Abstract:ThemainphysiologicalcharacteristicsofsixSouthChinasuperhigh—yieldingricevarieties(combinations).includingdrymatterweight.chlorophyllcontents(a+b)ofthefunctionalleaves.1eafareaindex(IAI).rootactivityandnetphotosyntheticratewere
5、measuredattheactivetilleringstageinbothearlyandlatecrops.Thesignificanceofdifferenceamongthesephysiologicalcharacteristicsandtheeffectsofthesephysiologicalcharacteristicstodrymatterweight.andtheeffectsofdifferentenvironmentsbetweenearlyandlatecropswereanalyzedbyusingstatis
6、ticsmethods.TherequiredphysiologicalvaluesattheactivetilleringstagefordynamicplanttypebreedingofSouthChinadoublecroppingsuperhigh—yieldingricewereputforward.Theywere3.9—4.2mg?g一intheearlycropand4.0mg?g一inthelatecropfortheidealchlorophyllcontents(aandb)ofthefunctionalleaves
7、t27O一348g?g一'?h一'intheearlycropand3l8Itg?g一?h～'inthelatecropfortheidealrootactivity.2.4—2.7intheearlycropand3.8inthelatecropfortheidealleafareaindex.24.8p.mol?nl.?s'intheearlycropand23.3t~mol?m一!?s—inthelatecropfortheidealnetphotosyntheticrateoffunctionalleaves.Keywords:Su
8、perhigh—yieldingrice;Planttype;ActEretilleringstage;Physiologicalcharacteristics超高产水稻理想株型
