1.One of them,designatedas stg2(salt tolerance during germination 2) was studied.
本文中对其中的一株耐盐突变体,命名为stg2(salt tolerance during germination 2),进行了研究。
2.Effects of different concentrations(120～360 mg·L-1) of humic acid(HA) on seed germination and seedling growth of Dioscorea zingberensis studied. The showed as follows:①HA did not affect the germination date but promoted the germination rate and germination uniformity.
试验研究了腐植酸对盾叶薯蓣种子萌发及幼苗生长的影响,在120～360mg·L-1的浓度范围内的结果表明,①腐植酸不影响盾叶薯蓣种子萌发时间,但能提高种子萌发率和发芽整齐度。
3.Effects of fomesafen on the germination of dayflower seeds were study Results showed that fomesafen significantly inhabited the germination of dayflower seeds With the increase of concentration ,the germination,the length of the radicle and the length of the plantule significantly decreased The ED 50 of the germination rate,the length of the radicle and the length of the plantule was 13 4,15 91 and 27 41mg/kg,respectively The inhibition was more significant on radicle than on plantule
虎威对鸭跖草种子萌发影响的试验结果表明 :虎威对鸭跖草种子萌发具有明显的抑制作用 ,即种子萌发率、胚根和胚芽的生长量均随着虎威浓度的增加而显著下降 (p
4.The germination tests show that the germination values of spinach (Spinacia oleracea)seeds are only 41. 7% and 24. 3% of untreated seeds , the seeds are soaked in 1% aqueooussolution of Kaper seeds germination accelerating agent (Ⅰ), [SGAA (Ⅰ)], contained calper for26 hours improved germination values up to 82. 0% and 73.5%, respectively.
发芽试验表明，未经处理的菠菜籽发芽率仅有41．7％和24．3％，6经过1％的“凯普”种子萌发促进剂（SGAA）在室温浸泡26h后，其发芽率分别达到82．0％和73．5％。
5.For the inhibition of the ele ment on seed germination and root elongation of wheat, our results showed that l ow concentration of Se (under 0.5 mg·L-1) could promote the seed germination of wheat and its seedling growth, while high concentration of Se ( above 5 mg· L-1) reduces the germination rate of seed, the growth of seedling, its vigor and á-amylase activity markedly.
结果表明,Se在适量范围内(5mg·L-1)时,对种子活力、α-淀粉酶及幼苗和根生长具有胁迫效应。
6.2. The seed germination rate of different provenances of Toona sinensis was high. However, the rate of field germination rate was lower than seed germination rate and varied from 25.33 percent to 55.33 percent.
2．不同种源香椿种子发芽率均较高，但场圃发芽率不高，变幅为25.33％～55.33％。
7.This study was conducted to examine the interrelationship of 10 seed vigor traits in 12 wheat genotypes through variance,co-variance and path coefficient analysis,to determine broad-sense heritability,and to estimate genetic advance under selection.The genotypes showed significant difference for all traits,except for percentage of normal seedling.Genetic correlation between conversion efficiency of seed reserve,electrical conductivity with other traits were not significant,showed that selection for any of them might be possible without hampering any other traits.However path coefficient analysis indicated that conversion efficiency of seed reserve,seed reserve utilization ratio have strong direct effect in affecting seedling weight,and that mean germination time has significantly negatively correlated in affecting GI.Moderate to high estimates of broad-sense heritability,genetic coefficient of variation and expected genetic advance were obtained for electrical conductivity,germination index,mean germination time,seed dry weigh,seedling dry weigh,seed reserve depletion ratio indicating the possibility for improving these traits.
本研究利用12个普通小麦品种对10个种子活力性状的遗传变异和相关研究,表明除正常幼苗百分率外,其余种子活力性状在品种间均存在显著的差异.种子贮藏物质转换效率、电导率两个性状间及与其它性状均无显著的遗传相关,因此对他们的选择不会影响到其它性状.通径分析表明幼苗干重主要取决于种子贮藏物质转换效率、种子贮藏物质利用速率;发芽指数主要由平均发芽时间决定.电导率、发芽势、幼苗干重、种子干重、发芽指数、种子贮藏物质消耗比率6个性状表现中到高的遗传力、遗传变异系数和相对遗传进展,指明通过遗传育种手段改良这些性状是可能的.
8.When the concentration of Hg2+ increased the germination rate of Egeria najas showed a degressive trend, and the germination rate of shoot fragment in June was higher than Novemb
不同浓度Hg2+对细叶娱蛤草侧枝发芽个数的影响没有明显的规律，Hg2+浓度>l . oomg/L处理己对细叶娱蚁草侧枝生殖产生毒害作用。
9.With the typical water-base waste drilling fluid in Daqing oil field,authors carried out experiments of germination percentage of maize and soybean seedgrown in the field and germination percentage of soybean seed cultivated in pots todemonstrate the effect of waste drilling fluid upon crops.
为了阐明废钻井液对农作物的生物效应，以大庆油田典型的水基废钻井坡进行了玉米、大豆种子发芽率试验及大豆盆栽试验。
10.The results as follows:25℃,15% sucrose,and 100 mg/L boric acid were the optimal conditions for pollen germination and tube growth,in which the rate of pollen germination and the length of pollen tube were 90.2% and 633 μm,respectively.
结果表明:花粉萌发及花粉管生长以15%蔗糖,100 mg/L硼酸,25℃最适宜; 该培养条件下花粉的萌发率及花粉管生长均达最大值,分别为90.2%和633μm;
