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In the thesis, we choose six wild species in northeast of China to study the configuration, physiological characteristic, peculiarity of dormancy and bourgeon as well as seedlings growth process. The results as follows:(1) Morphological difference of six species in Iris is obvious.

基于此目的,本论文以东北野生鸢尾属中的6种典型植物为研究对象,从种子形态结构、种子各项生理指标(包括生活力、含水量、吸水性)、种子的休眠与萌发、种苗的发育过程几个方面进行研究。

This research was conducted in degraded rangeland at the southwestern edge of the Mu Us sandland, Yanchi county, Ningxia, the soil seedbank features and its relation to vegetation was analyzed using similarity analysis and ordination method, the results show that seeds within soil distribute mainly in 0~5 cm soil layer, less seeds in 6~15 cm soil layer in exclosed and non-exclosed rangeland, for seeds in exclosed soil, species richness and diversity index H are higher, while D is lower, exclosure measure, generally speaking, can increase plant species and amount of vegetation and seeds in soil, some annual plants, mesophytes and halophytes appears in the soil or surface.

以毛乌素沙地西南缘宁夏盐池县的退化草场为研究对象,采用相似性分析和排序方法对封育和未封育草场土壤种子库的特征及其与地上植被间关系进行了研究,结果表明无论封育区还是未封育区,土壤种子库中的种子主要分布于0~5cm的土层,6~15cm土层的种子数很少;封育区土壤种子库的物种丰富度大于未封育区,物种多样性则表现为H 值较大,而D值较小,总体上看封育措施可以提高地上植被和土壤中种子的种类和数量,一些一年生植物、中生植物和盐生植物开始出现在地面或土壤种子库中。

Although not quite as permanent as perennials, many biennials re-seed themselves, becoming comparable in performance to perennials. Biennial seeds that are planted one year will not flower until the following year. Foxglove, Hollyhock and Iceland poppy are biennials. Many people think of Hollyhock as a perennial as it self sows easily.

虽然没有那么长期稳定,很多两年生植物能够自我繁殖生长,这个是能够跟多年生植物相提并论的地方,两年生植物的种子在第一年播种种植之后并不会开花直到下一年,毛地黄、蜀葵和冰岛罂粟是两年生植物,许多人把把蜀葵当作多年生植物,因为他自我繁殖非常容易。

The suboptimal thermoperiod was 15℃/25℃. 2. The fresh H. ammodendron seeds had highly germination ability, and have no dormant phenomenon; The fruiting wings had significant inhibition the germination of fresh mature seed in autumn, and fruiting wings made H. ammodendron seeds maintain dormancy, but with store time extend, the effect that fruiting wings inhibited seed germination gradually alleviate, fruiting wings didn't inhibition effect of seed germination until the next spring(in 4 month).

2梭梭新采收的去翅种子不存在休眠现象,而具有很高的萌发生活力;果翅对秋天新成熟种子的萌发有显著的抑制作用,使种子处于强迫休眠状态;果翅对种子萌发的抑制作用随着贮藏时间的推移逐渐降低,到翌年春天(4月)果翅解除对种子萌发的抑制作用。

Persicum seeds was 5℃/15℃. The suboptimal thermoperiod was 15℃/25℃. 2. The fresh H. ammodendron seeds had highly germination ability, and have no dormant phenomenon; The fruiting wings had significant inhibition the germination of fresh mature seed in autumn, and fruiting wings made H. ammodendron seeds maintain dormancy, but with store time extend, the effect that fruiting wings inhibited seed germination gradually alleviate, fruiting wings didn't inhibition effect of seed germination until the next spring(in 4 month).

2梭梭新采收的去翅种子不存在休眠现象,而具有很高的萌发生活力;果翅对秋天新成熟种子的萌发有显著的抑制作用,使种子处于强迫休眠状态;果翅对种子萌发的抑制作用随着贮藏时间的推移逐渐降低,到翌年春天(4月)果翅解除对种子萌发的抑制作用。

First of all,we tested the germination and water uptake rate of 47 species typical xerophil seeds grow up in north China from 20 families,38 genuses under sufficient water and different Grads water stress by high-molecular-weight polyethylene glycol(PEG6000).The results show that Xerophil seeds from the same habitat exhibited similar patterns in response to water stress.Xerophil seeds from arid community were stronger in germination and imbibition than that from other two communities under serious water stress,whereas Xerophil seeds from humid community were sensitive to any degree of water stress.Namely,the seeds live in arid habitat possessed high germination and quickly water uptake in sufficient water or any degree of water stress,but the others grow up in humid habitat shown significant difference which germination and water uptake well under sufficient water but inhibited even if slight water stress.

首先,我们通过对20个科,38属,47种旱生植物种子在水分充足和不同梯度的干旱处理(聚乙二醇PEG6000)条件下的萌发率及吸水率实验发现,当水分胁迫强烈时,分布于干旱沙漠地区的植物种子其吸水率和萌发率都高于半干旱和湿润地区的植物群落,相反,湿润地区植物种子的吸水率和萌发率对任何的水分胁迫都表现出敏感的响应趋势,也就是说,生境恶劣的植物种子在较强的干旱胁迫下,仍然保持了较高较快的萌发率及吸水率,水分充足与水分缺乏时无显著差异,而生境相对较好的植物种子在水分充足情况下萌发与吸水良好,但在干旱胁迫时则受到明显抑制,水分充足与水分缺乏时差异显著。

The first, as regards theory, Vijnaptimatrata regard that all the dharma (including material world and inner world) are created by the eight vijinana of citta-dharma, and the reason that vijinana can create all the dharma, is the bijas be hide in alayavijnana, this bijas can create all the dharma under some condition. And this dharma will vasana vijnaptimartata, enables its seed to be mature, like this continual create dharma, dharma vasana the bija, the bija turns round presently, This is the possible theory condition of transform vijnana into wisdom to be able.

首先就理论方面而言,唯识学认为世间万法(包括物质世界和精神世界),都是由心法八识所变现生起的,而识之所以能够变现世间万法,就在于在阿赖耶识中潜藏有万法的种子,该种子在一定条件会生起变现出世间万法,而生起的万法又熏习阿赖耶识,使其种子得以成熟,如此无间地生起现行,现行复熏习种子,种子复起现行,这是转识成智得以可能的理论条件。

Low concentration of NaCl solution could promote the growth on the shoot of seed germination. The growing length of roots and shoots of two halophytes treated by 100 mmol·L~(-1) NaCl reached the highest and the growing condition on shoots was best. Then some physiological and biochemical parameters including the content of Na~+, K~+, Ca~(2+), proline and plant leaf tissue water potential, the assays of membrane lipid peroxidation and antioxidant enzymes were determined with the two halophytic plants on salinity.

研究工作首先对盐爪爪和盐穗木在种子萌发阶段的耐盐性进行了比较研究,表明盐爪爪和盐穗木都是很耐盐的盐生植物,在种子萌发期,盐穗木比盐爪爪更耐盐;NaCl和等渗的聚乙二醇对种子的萌发都产生抑制作用,且PEG的抑制程度大于等渗的NaCl。

These results suggested that higher concentration of NaCl could cause the seed dormancy and accelerate the germination of ungerminated seeds. Perhaps there was a mechanism that the seed coat or embryo could prevent Na~+ from entering into the embryo so as to keep higher K~+ and lower Na~+/K~+ in the embryo. And it might be one of the physical mechanisms that the seed of Hibiscus hamabo Sieb.et Zucc. could resist high salinity stress. In addition, the annual seedlings of Hibiscus hamabo Sieb.et Zucc.

上述结果表明:高浓度的盐可以诱导海滨木槿种子休眠并促进盐胁迫解除后种子的萌发,这种机制可以使之避开不良的萌发条件,等到降雨使土壤溶液浓度降低再萌发,这是盐生植物的种子适应盐渍生境的一种有效方式;海滨木槿的种皮有阻挡Na~+进入胚的作用或胚具有某种拒Na~+的机制,使胚保持较高含量的K~+和较低的Na~+/K~+,这可能是海滨木槿种子耐盐的主要生理原因之一。

The main contents are as follows:(1) The seed dormancy types of halophytes;(2) The essential conditions for dormancy breaking of seeds in halophytes;(3) The correlation between seed germination of halophytes and salinity.

本文讨论了盐生植物种子的休眠、休眠解除及萌发的特点,主要内容有:(1)盐生植物种子的休眠类型;(2)打破盐生植物种子休眠的必要条件;(3)盐生种子萌发与土壤盐度的关系。

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