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Three wheat spindle streak mosaic viruses resistant cultivars ('Yining Xiaomai', 'Xu87-633', and 'Xifeng') and one susceptible cultivar ('Zhen9523') were used as parents of 3 crosses in this experiment. WSSMV resistance of the parents, F1, and F2 was evaluated under field condition.

选用3个抗梭条花叶病的小麦品种&仪宁小麦&、&徐87-633&和&西风&为抗病亲本、以感病品种&镇9523&为感病亲本配制了三个杂交组合，对四个亲本及其杂种后代（F1及F2代）单株的田间抗病鉴定表明，三个抗病亲本的抗性均由核基因控制，为显性遗传方式。

PHap1 was first transformed into Agrobacterium tumefaciens strain LBA4404 by electroporation first and then introduced into the sterile tube culture seedlings of different susceptible potato eultivars'Mira','Zhong-5-1'and'Jinguan', and tobacco cultivar NC89, respectively, by the leaf disc infection method.

以电激法将pHap1导入根癌农杆菌LBA4404，用叶盘法分别转化马铃薯青枯病感病品种米拉、中-5-1、金冠以及烟草感病品种NC89的无菌试管苗。

Highlighted many areas in plant nutrition needing continued research focus including ammonium nutrition, cultivar/hybrid nutrient interactions, magnesium and chloride nutrition, sulphur nutrition, critical nutrient concentrations at early stages of plant development and a better understanding of plant nutrient uptake throughout the growth cycle.

比如Beaton等（1990）强调需针对植物营养的许多领域继续研究，包括铵养分、栽培种/杂交种与养分间的交互作用、镁和氯养分、硫养分、植物发育早期临界养分浓度和更好了解全生育期植物养分吸收。

For this reason, compatible reaction has been established based on the cultivar Shuiyuan 11 and stripe rust CY31 interaction.

为此，本研究选择小麦水源11品种和条锈菌CY31号小种构成亲和组合。

It had proved that wheat cultivar Gaby is an important resistant resource to stripe rust.

小麦品种Gaby是重要的每锈病抗源品种，为了明确其抗锈遗传规律。

The results suggested that the activities of these enzymes quickly enhanced at 1 d, 3 d, 5 d and 7 d after inoculation by injecting conidia of the false smut fungus at 7-10 d before heading in the resistant cultivars, but slower increase in the susceptible cultivars, and also showed that there was correlations between the cultivar resistance to the disease and the three enzymes.

结果表明，在抗病品种中苯丙氨酸解氨酶、过氧化物酶和多酚氧化酶3种酶活性接种后迅速提高，变化幅度较大；而感病品种的酶活性在接种后缓慢增加，变化幅度小。由此说明，这3种防御酶与水稻抗稻曲病有一定的关系。关键词水稻；稻曲病；防御酶

Vines of Jumeigui grape cultivar were subjected to root restriction for solving the problems of poor coloration arid declined inner quality which usually occurring in Zhejiang province.

针对巨玫瑰葡萄在浙江存在的着色差、品质下降等问题对其进行了根域限制栽培试验。

Many of the plant retrotransposons are transcriptionally activated by various biotic and abiotic stress factors. Retrotransposons are used as molecular markers for their traits. S-SAP, IRAP, REMAP and RBIP are developed and will be applied widely in gene mapping, genetic biodiversity and phylogeny studies, and cultivar certification.

由于反转录转座子的特点，使其作为一种分子标记得以应用。S-SAP、IRAP、REMAP和RBIP等分子标记相继发展起来，在基因作图、生物遗传多样性与系统进化、品种鉴定等方面具有广泛的应用前景。

In this study, we have established the genetic transformation system of the White clover which is very helpful for improvement of the White clover cultivar.

白三叶草遗传转化体系的建立对于利用基因工程对白三叶草进行品种改良起着重要的作用。

The lengths of the fragments within the bookends were found to vary according to the cultivar.

在这些书档里面DNA片断长度在不同的栽培变种之间不同。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失