偃麦草

GISH technique was applied to TAF46 a partial amphiploid (2n=8x=56) derived from a Thinopyrum intermedium×Triticum aestivum hybrid and to 6 of the possible disomic addition line derived from it to determine the genome origin of the alien genome and the addition lines.

应用GISH对小偃麦部分双二倍体TAF46(2n=8x=56)及其衍生的6个二体异附加系的中间偃麦草染色体组种类进行了分析、鉴定。

Its contents are as follow: A description for the characteristics of Agropyron elongatum and its genome; the methods used to overcome the cross-sterility and hybrid sterility; the cross breeding procedure and the genetic analysis for it; the selected hybrids which are the Triticum-Agropyron octoploid species, the alien addition lines, the alien substitution lin...

内容介绍了长穗偃麦草的特性和染色体组型，克服杂交不育和杂种不育的方法，杂交育种的程序及其遗传分析和选出的小偃麦八倍体种、异附加系、异代换系与丰产抗病的小偃麦新品种。

Misdivision of translocation chromosome at anaphase Ⅰ and rye chromatin micronucleus at tetrad stage were observed.

在遗4212×遗4095的F2代中检测到一个具有中间偃麦草染色体小片段易位到小麦染色体端粒部分的小麦-中间偃麦草易位植株。

Morphological and Cytogenetics of octoploid trititrigias-Maicao No. 9, distant bred from the progeny of common wheat and thinopyrum intermedium were studied.

对普通小麦与中间偃麦草远缘杂交后代中选育的八倍体小偃麦－麦草9号进行了形态学和细胞学鉴定。

The genomes of octoploid Tritielytrigia types,7430,68,693,7631 and 784,dev eloped from the hybridization between Triticum aestivum and Elytrigia elongata ( Agropyron elongatum,2n=70) have been studied.

本文对普通小麦与长穗偃麦草(Elytrigia elongata=Agropyron elongatum，2n=70)染交选育出来的5个八倍体小偃麦的染色体组进行了研究。

By using electrophoresis analysis of seed gliadins, the specific bands of E. intermedia were discovered in electrophoretogram of 6 octoploid Trititrigia, the band types of Shannong TE183, Shannong TE185, Shannong TE198, Shannong TE256 and Shannong TE347 are basically the same, and that of Shannong TE188 is different from the other 5 octopliod Trititrigia mentioned above .

种子醇溶蛋白电泳分析证明，6个八倍体小偃麦醇溶蛋白图谱中均具有亲本中间偃麦草的特异带，并且山农TE183、山农TE185、山农TE198、山农TE256和山农TE347等5个八倍体小偃麦的带型基本一致，为同一类型，而山农TE188为另一类型。

GISH analysis showed Triticale have 2 items chromosomes presented yellow and others chromosomes presented chrysoidine, because yellow chromosomes combined the Thinopyrum intermedium DNA, others chromosomes dye by PI. 4. Analysis of resistance gene: CH-9916 is the hybrid progenies of Octoploid tritielytrigia TAI-7045 X common wheat "Jinmai33".

GISH分析结果表明，小偃麦衍生系CH-9916的42条染色体中有2条外源染色体因结合有探针DNA而呈现出较强的黄色杂交信号，而没有结合上探针DNA的普通小麦染色体经过PI染色呈现出桔红色，初步推断小偃麦衍生系CH-9916为一个"小麦一中间偃麦草"的代换系。

We analyzed the electrophoritic patterns of 16 kinds of isozyme and three kinds of storage protein in Agropyron elongatum 2x and Ag.

应用等电聚焦和SDS-PAGE方法分析了二倍体长穗偃麦草(Agropyron elongatum 2x)和四倍体长穗偃麦草Ag。

Thinopyrum intermedium,one of the relative species of common wheat,is a kind of dominant wheat germplasm resource for the resistance to stripe rust in wheat genetic improvement. With using Chinese spring phlb as recurrent parents and awnless Zhong 4(a partial chromosome of Thinopyrum intermedium)as donor parents,that is backcross selection,the offspring BC_2F_(7～9)were acquired.Cytology check and genome in situ hybridization, were used for the translocation lines and substitution lines detection.

本研究采用常规杂交并辅抗性鉴定等方法，以中国春phlb突变体为轮回亲本，利用无芒中4，转育中间偃麦草的抗条锈性，并通过细胞学和DNA原位杂交检测，鉴定和筛选普通小麦—中间偃麦草的抗条锈病异代换系或易位系。

GISH analysis showed Triticale have 2 items chromosomes presented yellow and others chromosomes presented chrysoidine, because yellow chromosomes combined the Thinopyrum intermedium DNA, others chromosomes dye by PI. 4. Analysis of resistance gene: CH-9916 is the hybrid progenies of Octoploid tritielytrigia TAI-7045 X common wheat "Jinmai33".

GISH分析结果表明，小偃麦衍生系CH-9916的42条染色体中有2条外源染色体因结合有探针DNA而呈现出较强的黄色杂交信号，而没有结合上探针DNA的普通小麦染色体经过PI染色呈现出桔红色，初步推断小偃麦衍生系CH-9916为一个&小麦一中间偃麦草&的代换系。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。