偃麦草

Chromosome Pairing in Decaploid Th. ponticum and F_1 Hybrids of It with Both T. aeativum and T. durum

彭梯卡偃麦草及其与普通小麦和硬粒小麦杂种F_1的染色体配对

Except that, our knowledge about the HMW glutenin in this species was still very limited.

但有关偃麦草物种高分子量谷蛋基因分子序列的报道还非常少见。

That could be the results of unequal misdivision of wheat-rye 1BL/1RS translocation chromosome and Thinopyrum chromosome during meiosis.

实验结果表明，1BL/1RS 小麦-黑麦易位染色体与外源染色体包括中间偃麦草、簇毛麦染色体在减数分裂过程中没有相互作用。

It was proved that the genomes from E. intermedia may be different between six octoploid Trititrigia and another five 8x Trititrigia Zhong1, Zhong2, Zhong3, Zhong4 and Zhong5 acquired by other breeder.

综合种子醇溶蛋白电泳和细胞学分析结果，初步认为本研究选育的6个八倍体小愝麦与前人选育的中1、中2、中3、中4、中5等5个八倍体小偃麦所携带的中间偃麦草染色体组可能不完全相同。

The trigerieric hybrid involving Triticum, Leymus and Thinopyrum has been created by the cross between Octoploid Tritileymus and Octoploid Tritithinopyrum, and the morphology, fertility and cytology of the F1 hybrids was studied.

利用八倍体小滨麦和八倍体小偃麦杂交，创制出小麦－滨麦－偃麦草三属杂种，对杂种F1进行了形态学、育性和细胞学分析。

Remote crossings of common wheat and Agropyron glaucum have shownenormous form and species formations.

普通小麦与天兰偃麦草远缘杂交时，类型的形成十分丰富。

The leaf rust resistance gene Ir38 in wheat was isolated from an Agropyron intermedium group 7 chromosome.

小麦抗叶锈基因Lr38来源于中间偃麦草，位于其第七组的一条染色体上，并被标定在6DL上。

The phylogenetic analysis based on the sequences in this region indicated that the y-type HMW glutenin subunits of Agropyron elongatum species were different from other subunits, whereas the x-type subunits of them were most closely related to that from the B genome.

推测四倍体长穗偃麦草中的E1基因组可能起源于二倍体的E基因组。与来自小麦族的A、B、D和G基因组部分亚基基因的启动子序列比较表明，小麦族的这一区域在进化上是相当保守的，不同基因组来源的序列同源性都在90%以上。

In the BC〓F〓 and BC〓F〓 generation of Yannong15×Thinopyron intermedium hybrid, 4 octoploids which had chromosome number of 2n=56 and could form 28 bivalent at PMC MI, 14 disomic addition lines which had chromosome number of 2n=44 and could form 22 bivalent at PMC MI; three monosomic addition lines which had chromosome number 2n=43 and had the chromosome configuration of 21Ⅱ+1Ⅰ at PMC MI, 1 substitution line which had chromosome number 2n=42 and could form 21 bivalent at PMC MI were selected by observation of mitosis in root tip cell and meiosis in pollen mother cell.

在烟农15与中间偃麦草杂交的BC〓F〓和BC〓F〓代中，通过根尖有丝分裂和花粉母细胞减数分裂中期Ⅰ观察选出4个2n=56，PMC MI染色体构型为28Ⅱ的八倍体小偃麦；14个2n=44，PMC MI染色体构型为22Ⅱ的双体异附加系；3个2n=43，PMC MI染色体构型为21Ⅱ+1Ⅰ的单体异附加系；1个2n=42，PMC MI染色体构型为21Ⅱ的异代换系。

Meantime, the performance of OPTC-11 was verified with Xiaoyan 22, a cultivar heaving blood from long-spike oat grass so that its importance was confirmed in molecularly-aided breeding.

同时，具有长穗偃麦草血缘的小麦品种小偃22对OPC11进行了验证，明确了其在分子辅助育种中的价值。

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。