查询词典 seed plants

Second axis reflected variation in seed mass and fine root morphology. Plants at the positive endof this spectrum were plants with large seeds and low specific root length.

第二轴反映了种子重量和细根形态的变异，在谱的正的这一端的物种具有大的种子低的比根长。

The isolates of S.sclerotiorum from different geographical regions and host-plants were cultured in the PDA culture medium. Mycelium from the culture was used for preparation of wheat seed inocula. The method for evaluation of resistance to soybean white mould in the field condition was established using silver paper trussing inoculum with minimally invasive on the soybean plants.

采用收集不同地区和寄主来源的菌核病分离物，经PDA培养基再生培养，再接种麦粒形成麦粒接种体，利用微创结合锡箔纸捆绑麦粒接种体的方法建立大豆菌核病田间接种鉴定方法。

The variation rates of four wheat lines were 2%~3%. The characters of SP1 variation plants at maturity stage also appeared big changes. SP1 variation plants had short growing period, high seed setting rate, loose plant-type and clavated spike-type. There were not consistent change in plant height, the number of spike grain and the weight of 1000 kernel among four lines.

四个小麦品种SP1代变异株率为2％～3％；成熟期SP1代变异株性状也有较大变化，表现为生育期显著缩短，结实率有所提高，株型向松散趋势发展，穗型则均表现为棍棒形，株高、穗粒数和千粒重的变化品种间表现不一致。

Five of fifty random primers amplified DNA polymorphism hands in RAPD analysis of seed-derived seedlings and of in vitro regenerated plantlets taken at random. One primer eyen amplified the difference between the regenerated plants. This suggested that there was some variation in DNA in plants of M. sativa regenerated in vitro.

随机选取实生苗和下胚轴愈伤组织再生苗进行RAPD分析，结果表明，所用的50个随机引物中有5个扩增出差异性条带，甚至再生植株之间也有1条引物扩增的条带有差异，这说明经组织培养所得到的再生植株与实生苗相比，在DNA水平上发生了一定程度变异，并且这种变异也存在于再生植株之间。

A pot experiment was conducted with two soybean varieties (Di2003-1 and Hefeng25) and two main soil types in Heilongjiang Province to study the interactive effects of variety and soil type on the root morphology and nodule traits of soybean plants. Root samples were collected at the fifth trifoliolate stage, bloom-beginning stage, pod-beginning stage, full pod stage, seed-beginning stage, full seed stage, and full maturity stage for the analysis of root dry mass, root length, root surface area, average root diameter, nodule number, nodule fresh mass, and mass per nodule.

选取黑龙江省2种主要农田土壤类型和2个大豆品种（滴2003-1和合丰25），采用盆栽试验，分别于大豆第5片复叶展开期、初花期、结荚初期、结荚盛期、鼓粒初期、鼓粒期和完熟期取样，进行根系形态（根干质量、根长、根表面积和平均根直径等）和根瘤性状（根瘤数、根瘤鲜质量和单个根瘤质量）的动态分析，以研究品种和土壤类型对大豆根系形态特征的影响。

Plants grown from seed are not always true to type, ie exactly like the plant that gave the seed .

植物由种子发育成熟并不见得与该植物原型一模一样。

Plants grown from seed are not always true to type, ie exactly like the plant that gave the seed.

植物由种子发育成熟并不见得与该植物原型壹模壹样。

In this paper, male sterile line of alfalfa was used to be improved with crossing, because the seed production of crossing is low. The affecting factors of seed production of male sterile line of alfalfa and its crossing progenies that are crossed with male sterile lines of alfalfa and good alfalfa that male is fertile were analyzed. The characteristics of female reproductive organs of male sterile line and its crossing progenies are analyzed in cell morphology. The genetic difference of male sterile line and its crossing progenies are analyzed in enzyme protein. The results showed: 1、Rate of podding of nature crossing and fecundity of artificial crossing of the male sterile plant BC1-2 that is the crossing progency of male sterile line of alfalfa and Medicago varia Martin.cv.'Caoyuan No.1'is higher than male sterile lines. Rate of podding of nature crossing and fecundity of artificial crossing of the male sterile plants BC1-19、BC1-21、BC1-22、BC1-23 that are the crossing progencies of male sterile line of alfalfa and Medicago sativa L.cv.

针对苜蓿雄性不育系杂交制种产量低的问题，采用杂交法对苜蓿雄性不育系进行改良，以原苜蓿雄性不育系为轮回亲本与雄性可育优良苜蓿品种杂交，分析苜蓿雄性不育系及其杂交后代种子产量的影响因素，从细胞形态学方面观察和分析杂交后代及原不育系在雌性生殖器官上的变异特点，从酶蛋白水平对杂交后代及原不育系的遗传差异进行分析，初步研究结果如下： 1、苜蓿雄性不育系与草原一号苜蓿的杂交后代不育株BC1-2，以及苜蓿雄性不育系与X′(苜蓿雄性不育系与新疆大叶苜蓿的杂种F1代)的杂交后代不育株BC1-19、BC1-21、BC1-22、BC1-23的天然杂交结荚率和人工杂交制种的结荚率和百粒重均高于原苜蓿雄性不育系。

Botany》is composed of seed plant morphology anatomy and plant classification including spore plants classification and seed plant classification.

植物学》由种子植物形态解剖、植物分类（包括孢子植物分类和种子植物分类）两大部分组成。

The strong resilience of annual herbaceous plants is ensured by ample seed source in soil seed bank.

不同沙漠化程度的群落中，即使沙漠化程度最严重的流动沙地上，只要群落一旦建立，就有足够数量的种源。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。