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时间:2019-05-11
《玉米子粒灌浆速率的配合力分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、玉米科学2007,15(3):99~102,106JournalofMaizeSciences文章编号:1005—0906(2007)03—0099—04玉米子粒灌浆速率的配合力分析闫淑琴,苏俊,李春霞,龚士琛,宋锡章,李国良,扈光辉,王明泉(黑龙江省农科院玉米研究所,哈尔滨150086)摘要:试验选用9份自交系,按格列芬双列杂交方法Ⅱ设计。对4个阶段灌浆速率配合力分析并结合产量对自交系和杂交组合进行综合评价。结果表明:第1、Ⅱ、Ⅲ、Ⅳ期灌浆速率的配合力自交系间有较大差异;同一自交系及同一自交系的不同杂交种4个时期的灌浆速率也有较大差异。
2、HR705自交系4个阶段均较低;Mo17第1、Ⅱ期较低,第Ⅲ、Ⅳ期较高;HR11前3期较高,第Ⅳ期较低;黄早四4期均高;HR304前两期较低,后两期较高;丹340I期较低,其它3期均高;HR1124期均高;K10第1、Ⅱ期最高,Ⅲ、Ⅳ期较低;HR106的4期均较低。灌浆速率一般配合力高的自交系其特殊配合力也较高,一般配合力低的自交系也有特殊配合力较高的组合出现,因此有必要重视特殊配合力。关键词:玉米;子粒;灌浆速率;配合力中图分类号:S513.024文献标识码:ACombiningAbilityofGrainFillingRateinMa
3、izeYANShu—qin,SUJun,LIChun-xia,GONGShi-shen,eta1.(MaizeResearchDepartmentofHeilon~iongAcademyofAgriculturalSciences,Harbin150086,China)Abstract:NineinbredlineswereusedtomatingcrossesbyGrifing’Sdesign2,thecombiningabilityofgrainfilling,thecorrelationwithyieldwereanalyzed.T
4、hemainresultsarediscussedinthefolowing:Thesignificantdifer—encesofcombiningabilityofgrainfilingwereobservedamonginbredlinesinthefourstagesofgrainfiling.Therewerealsohavesignificantdiferencesinthesameinbredlineandhybridamongthefourstagesofgrainfiling,inbredHR705waslowerina
5、llofthefourstages.InbredMo17hadlowercombiningabilityatthestageIandstage1I,buthavinghighercombiningabilityatthestagemandstage1V.ThecombiningabilityofinbredHR11washigherinthefirst3stagesandlowerinthelaststage.InbredHuangzaosihadhighercombiningabilityinallofthefourstages.In—
6、bredHR304hadhighercombiningabilityinthefirst2stagesandlowercombiningabilityinthelaterstages.ThecombiningabilityofinbredDan340wasloweratthestageIandhigheratotherstages.ThecombiningabilityofinbredHR112washigherinallofthefourstages.ThecombiningabilityofinbredKIOwasloweratthe
7、stageIandstageⅡ.higheratthestagemandstageIV.InbredHR106hadlowercombiningabilityinallofthefourstages.Thespecialcombiningabilityoffillingratewashigherinthelineswithhighergeneralcombiningabilityoffilingrate.Therewerealsomanyhybridswithhigherspecialcombiningabilitybutthegener
8、alcombiningabilityoftheirparentswaslower.Weshouldpaymuchattentiontospecialcombiningabilityintheb
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