In this study, genetic analyses were conducted to determine the genetic basis in an elite resistant inbred line Siyi with complete resistance to maize dwarf mosaic. A new genetic model, two dominant complementary genes conditioning the resistance, were found by Mendelian genetic analysis based on parents, F1, F2 and backcrosses in three successive years' field trails. The two genes were further mapped near the centromere of chromosome 3 and 6, respectively by tightly linked microsatellite markers using 242 plants from F2 generation. The resistance gene on chromosome 3 is 1.0 cM apart from the flanking markers phi053 and umc1527, respectively. Whereas the linkage distance between two flanking markers bnlg1600 and phi075 and resistance gene on chromosome 6 was 1.0 and 4.0 cM, respectively. Genotypic analysis of the plants from testcross and F3 populations supported the new genetic manners.

課題組通過連續(xù)三年的抗病鑒定五月婷婷丁香网，在國內(nèi)種質(zhì)資源中篩選出一份綜合農(nóng)藝性狀優(yōu)良、配合力較高的自交系四一最新最大最全偷拍二区，三年的表型遺傳研究和兩年的分子標(biāo)記工作，發(fā)現(xiàn)四一中的玉米矮花葉病抗性是由兩對顯性互補(bǔ)基因控制的亚洲欧美一区二区啪啪啪，進(jìn)而利用F2作圖群體强奸视频网站在线观看高清无码，把發(fā)現(xiàn)的兩個基因定位在第三和第六染色體的著絲點附近，并獲得了雙側(cè)緊密連鎖的分子標(biāo)記連鎖圖譜91热在线视频观看，其中第三染色體上的分子標(biāo)記UMC1527和phi053從抗病基因雙側(cè)逼近1 cM黄色视频海外免费，而第六染色體上的分子標(biāo)記phi075、bnlg1600從抗病基因雙側(cè)分別逼近4 cM和1 cM亚洲精品综合久久国产二区；利用B2群體97人人模人人妻人人添、F2：3家系、BC3F1群體和帶有第三欧美乱论电影、第六染色體抗病基因以及兩個抗病基因的近等基因系国产三级电影免费，進(jìn)一步證實了四一中成株期抗性是由兩個顯性互補(bǔ)基因控制的。

Maize dwarf mosaic is one of the devastating and widespread viral diseases in the world.

玉米矮花葉病是世界普遍發(fā)生危害嚴(yán)重的玉米病毒病害之一www.色一区二区。

Two important virus diseases, maize dwarf mosaic and stunt, both transmitted by leaf hoppers.

另外兩種重要的病毒性疾病分別是玉米嵌紋病毒和萎縮性黑穗病欧美一级A片免弗看，都是通過葉蟬傳播。

Maize dwarf mosaic is one of the devastating and widespread virus diseases in the world. Understanding the genetic mode of inheritance of resistance genes is the basis for effective selection in resistance breeding program.

玉米矮花葉病是世界上普遍發(fā)生狼狼综合久久久久综合网、危害嚴(yán)重的病毒病害jizz污污视频免费看，挖掘優(yōu)異抗源并開展抗病遺傳規(guī)律的研究是進(jìn)行抗病育種的基礎(chǔ)。

The coding region in the genomic RNA of the Maize Dwarf Mosaic Virus was gained by the way of reverse transcription polymerase chain reaction.

本研究利用RT-PCR對玉米矮花葉病河南標(biāo)樣的基因組RNA進(jìn)行了全序列測定免费视频XNXX在线观看，并與Potyvirus于中其它病毒進(jìn)行了同源性分析激情小说在线视频观看。

Keywords: Maize dwarf mosaic; resistance gene;Complementary dominant genes; Molecular tagging

中文關(guān)鍵詞：玉米矮花葉病看免费黄视频；抗病基因三级专区；顯性互補(bǔ)基因；分子標(biāo)記

Maize ; maize dwarf mosaic virus ; resistance gene ; complementary dominant genes ; molecular tagging

玉米欧美喷浆；玉米矮花葉簿辆辆猎谙咦试础色色的五月天；抗病基因；顯性互補(bǔ)基因www.9色色；分子標(biāo)記

A new resistant elite inbred line Siyi was identified with resistance to maize dwarf mosaic virus strain B at early and adult stage.

優(yōu)良自交系四一是鑒定出的玉米矮花葉病新抗源91人妻大绿帽子论坛，它表現(xiàn)為全生育期抗性。

Species in the genus Thinopyrum are important wild relatives for wheat improvement. They possess many desirable traits such as drought, cold and salt tolerance, long spikes and more florets, high protein concentration. It has also been found that some species are the source of resistance genes for rust and powdery mildew, and especially, the source of resistance to wheat streak mosaic virus and barley yellow dwarf virus .

偃麥草屬植物是小麥遺傳改良中的重要野生近緣種久久久精品合，蘊(yùn)含抗寒精品aa视频在线、抗旱、耐鹽堿及長穗多花国产一级α爱免费视频、籽粒蛋白質(zhì)含量高等優(yōu)良性狀国产91中文字幕，同時又是小麥銹病和白粉病的重要抗源，特別是在小麥條紋花葉病和大麥黃矮病等病毒病的抗病育種中發(fā)揮了重要作用久操视频福利在线。

For further confirming the new genetic model, a set of NILs carrying different number of the resistance genes were developed, genotypic analysis of NILs clearly show that two dominant complementary genes cooperatively control the resistance to maize dwarf mosaic in maize.

兩個顯性互補(bǔ)抗病基因的發(fā)現(xiàn)和定位鲁一鲁性爱视频播放，豐富了我國玉米矮花葉病抗病基因資源，為標(biāo)記輔助選擇和抗病基因克隆以及抗病育種工作提供基礎(chǔ)日韩精品理论片在线观看。