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After preliminary study, it is found that environmental conditions at different levels have different effects on the seeds storage: The storage temperature of Hevea brasiliensis seeds is controlled at 22℃, it has the best effect on extending the seeds longevity, and meet the pratical requirement.

初步研究发现，不同水平的环境因子对种子贮藏的影响作用不同：橡胶树种子的贮藏温度为22℃时，对于减缓种子代谢，延长种子寿命效果最佳。

The conversion boundary of self-incompatibility was researched by sowing by stage. Sunshine of day and temperature was studied critically by investigating leafage and researching traits indoors. The results showed that the daily minimum temperature was the principal factor of affinity conversion and the affinity conversion boundary was 16.5~18.1℃.HE97 was primarily regard as self-incompatible line in this research. The method was by inbreeding and sib HE97, Half the silk of HE97 and Zheng58. Inbreeding and cross have been done simultaneously. The extending condition of pollen tube was observed by dying the silk after pollinating 4 hours. The individuals with pollen tube were observed having seeds, while the individuals without pollen tube were observed having few seeds or no seeds. So this study regard HE97 as sporophytic self-incompatibility .The planting ration of female parent HE97 and male parent 87-1 was 4:1.The nature cross-pollination was studied by the theory of endosperm xenity, the study show that the setting percentage of HE97 was 625%, in which the seed in self was 70% and the seed in hybrid was 30%. This was consistent with the study of silk anatomy structure, then come to the same conclusion: compatible pollen germination and fertilization can stimulate the self-incompatible pollen germination and fertilization in the same corn cob.

通过分期播种，进行了光温敏自交不亲和材料HE97亲和性转换区间的研究，依据田间跟踪调查叶龄及室内考种研究了HE97亲和性转换区间的光温临界值，结果表明：1日最低温度是影响HE97自交不亲和性的主要原因，亲和性转换区间在16.5℃～18.1℃之间。2通过HE97自交和姊妹交以及将HE97与郑58作为双亲，各自的花丝一分为二，分别正反交，授粉后4个小时分别取其花丝进行固定、染色，观察花粉管的伸长情况，根据结实率与花粉管伸长的对应关系，结果发现观察到花粉管的对应植株收获到了种子，而没有观察到花粉管的对应植株结实率极低或没有结实，本研究把HE97初步划为孢子体自交不亲和类型。3以HE97为母本，87-1为父本，按4母：1父行比，通过花粉直感效应研究天然异交率，结果母本HE97结实良好(62%)，其中自交粒占70%，异交粒占30%，结合花丝切片观察表明，亲和花粉的萌发及受精会导致落在同一果穗柱头上不亲和花粉的萌发不再受抑制。

By assuming the seeds in the vibration plate were distributed with regular tetrahedron,the influences of seeds lay thickness,n,negative differential pressure,Δp,seeds gap coefficient,λ,nozzle diameter, d_k,on suction force values were analyzed.

在此基础上，通过假设种群在振动种盘内呈正四面体空间分布，分析了种群层数n、负压差Δp、间隙系数λ、吸孔直径d_k对种子受力的影响，揭示振动和负压吸种机理。

These are the seeds of the Stone Pine, a native of the Mediterranean region, but the seeds of various other pines are eaten in various parts of the world including the seeds of the Korean Pine or North American pinon tree.

这些种子的石松树，一个土生土长的地中海地区，但种子的其他各种松树吃在世界各地，包括种子的红松或北美克皮诺树。

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。

It influences the spike length, the diameter of stalk and ear-corn; influences seed weight, the weight of seeds per ear, ear-corn, bracteal leaf, ear axis; the number of seeds per ear and per line, line number, the volume and weight of 100 seeds, and the seed density. Enhanced UV-B radiation also effects accumulation of dry matter with different influence in different growing period and different organ.

对玉米生长动态的影响包括干物质生产速率减小，且生育期不同玉米干物质积累所受到的影响也不同，同一个生育期不同UV-B处理下玉米不同器官所受到的影响程度不同。

This paper presents a study of Eucalyptus dunnii tissue culture, using its seeds as explants. The results reveal that MS medium is a suitable basic medium for its seeds to germinate and grow; that MS+KT1.0 mg/L+2, 4-D2.0 mg/L+Homocysteine30mg/L is a good medium to induce its seeds to dedifferentiate directly into callus; that H+6-BA2.0 mg/L+IAA0.2 mg/L is a good medium to make its bud on the seedling reproduce more buds; that MS+6-BA2.0 mg/L+NAA0.2 mg/L is a better medium to induce its root on the seedling into callus; that B5+6-BA2.0 mg/L+2, 4-D0.2 mg/L can induce its under-hypocotyl to differentiate into buds; and that B5+Ad2.0 mg/L+IAA0.2 mg/L can induce its under-hypocotyl into callus to generate normal buds.

以邓恩桉种子为外植体，探讨用最少种子快速繁殖最多幼苗的方法，结果表明：MS培养基是较适合邓恩桉种子萌芽和生长的基本培养基；诱导种子直接脱分化成愈伤组织的较佳培养基配方为MS+KT1.0 mg/L+2，4-D2.0 mg/L+半胱氨酸30 mg/L；以邓恩桉实生苗的芽来繁芽的较理想培养基配方为H+BA2.0 mg/L+IAA0.2 mg/L；邓恩桉实生苗的根诱导愈伤组织的较佳培养基配方为MS+6-BA2.0 mg/L+NAA0.2 mg/L；诱导邓恩桉下胚轴分化芽较佳培养基配方为B5+6-BA2.0 mg/L+2，4-D0.2 mg/L；诱导邓恩桉下胚轴脱分化为胚性愈伤组织的较佳培养基配方为B5+Ad2.0 mg/L+IAA0.2 mg/L。

And then the two different turfgrass seed germination tests conducted, results show that: 0.1 percent concentration of hydrogen peroxide concentration of 0.01% of the "Bi-care" and the concentration of 0.29 percent for the "God LU Hong Lu," The three kinds of reagents soaking treatment can significantly improve the wild Pennisetum and Eragrostis seed germination and growth of 0.10 percent by the concentration of the soaking H2O2 solution, then 0.29% concentration of the "God LU Hong Lu" after soaking solution, wild Pennisetum Eragrostis seeds and seed germination energy, germination percentage, germination index, root length and were significantly higher than control to deal with the seeds, but also to varying degrees higher than the other chemical reagents used to deal with the seeds, rapid germination and tidy.

然后对两种草坪草不同的种子处理进行了发芽试验，结果表明：浓度为0.1%的过氧化氢、浓度为0.01%的&碧护&和浓度为0.29%的&鲁虹神露&这三种试剂浸种处理能显著提高野生狼尾草和大画眉草种子的萌发和生长，经浓度为0.10%的H2O2溶液浸种，再经浓度为0.29%的&鲁虹神露&溶液浸种处理后，野生狼尾草种子和大画眉草种子的发芽势、发芽率、发芽指数、根长和芽长均显著高于空白对照处理的种子，也不同程度的高于用其他化学试剂处理的种子，发芽快而整齐。

This thesis firstly analyzed the hard-seed forming process during the seeds development of Medicago falcata L. and Lespedeza davurica Schindler; then a feeding experiment with sheep, chicken and quail was conducted to investigate germination percentage change of 6 legume species seeds after ingestion. The results showed:(1)During the seeds development of M.falcata L.

本文首先以黄花苜蓿、兴安胡枝子为研究对象，分析了种子发育过程中硬实的形成过程；继而以羊、鸡和鹌鹑为饲喂对象，比较了 6 种豆科种子饲喂动物前后的发芽率变化，探讨了野生动物采食对硬实形成的作用。

Halophytic seeds ; non-halophytic seeds ; seeds ; germination rate ; Na + and K + content ;α-amylase activity ; SOD activity

盐生植物；非盐生植物；种子；萌发率； Na+和K+的含量；α-淀粉酶； SOD

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。