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the seed quality
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  种子质量
     Influence of Different Harvest Dates and High-drying Temperatures on the Seed Quality of'Jin Ganlan 4'Cabbage
     成熟度和烘干温度对‘晋甘蓝4号’种子质量的影响
短句来源
     The results showed that, when picking off the male flower and 1~4 leaves while detasseling, seed yield might decrease by 3.0, 8.4, 22.5 and 32.8% respectively, and the seed quality (such as thousand kernal weight, germinative force etc.)
     结果表明:去雄期间摘除雄穗及1~4片叶时,商品种子产量将分别下降3.0、8.4、22.5和32.8%,同时种子质量(y0千粒重和发芽势等)也会受到一定程度的不利影响。
短句来源
     The seed quality controlling was studied. The slope was cultivated at 29 for 5d and the conservative time in the refrigerator(4 ) was not more than 60d.
     种子质量的控制:斜面孢子29℃培养5d,采用冰箱(4℃)保存时间不大于60d。
短句来源
     Post-ripening could improve the seed quality obviously.
     延长种瓜后熟期能明显地改善种子质量;
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     The results showed that the seed quality was the best while picked on the 60th day after pollination and 15 days after-ripening;
     结果表明 ,种茄从授粉到采收6 0 d、后熟 15 d的种子质量最好 ;
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  苗种质量
     This paper points out five expression about the seed quality reducible and resource retrogressive of Eriocheir sinensis,and analyses some reasons that lead to these expression,then puts forward proplsal about protecting the resource and raising the seed quality.
     探讨了河蟹 (Eriocheirsinensis)种质资源退化及苗种质量下降的 5种表现 ,分析了导致这些表现的原因 ,提出了保护种质资源和提高苗种质量的一些建议
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     2 Foliar application of 2g/L KH2PO4 could increase the seed yields and improve the seed quality, which influenced seed yields, 1000 seed weight, seed size and germination energy most markedly.
     2.胡萝卜种株抽薹后叶面喷施2g/L 的KH_2PO_4可以提高种子产量和质量。
短句来源
     The results indicated,campared with' plots system',the standardized head-line method inproved the seed quality,the seed purities increased up to 99.93%,99.47% and 98.12%,respectively.
     3个品种采用“穗系标准化繁育”与常规的“三圃制”繁育相比较,纯度分别达99.47%、99.93%、98.12%。
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     Effect of different measures on the seed quality and yield of eggplant during the crossing process was studied.
     研究了在茄子杂交制种过程中 ,不同技术措施对茄籽产量和质量的影响。
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     The seed quality of different maternal tree,sowing time and sowing method of Liquidambar formosana were investigated in randomized blocks design.
     采用随机区组设计了枫香不同年龄母树种子品质、不同播种时间(春播、冬播)和不同播种方式(条播、撒播)试验,进行枫香不同育苗方式对比研究。
短句来源
     Chinese cabbage bolting and bloom can be accelerated remarkably by spraying 1500 mg/L gibberellin's(GA3) for two times, so the number of the first divarication and the seed quality and yield can be increased.
     采用1500mg/L浓度的赤霉素在大白菜二叶期、五叶期喷施,能显著促进大白菜提早抽薹开花,提高大白菜种株的一次分枝数,进而提高种子的产量和质量。
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  the seed quality
The seed quality of minitubers derived from chitosan treatments in vitro alone and in combination with foliar treatment at acclimatisation was improved, giving rise to field plants with increased tuber numbers and yields.
      
Partial correlations between the seed quality traits and the agronomic characters of DH populations were analyzed.
      
There is no information on varietal differences and the impact of these practices on the seed quality.
      
These findings strongly suggest that to base selection on seed weight which may not influence the seed quality of soybean.
      
This mutant will be useful in the efforts to improve the seed quality.
      
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1.The variation and deterioration of important economic characters of a commercialvariety of upland cotton can be detected after being grown for several years.For instance,shorter fiber increases in proportion,the lint index and the ginning percentage become loweredreadily.Variations on growth habit and boll and seed characters tend to enhance year afteryear.Though the degenerated plants possess better boll bearing capacity,but owing to theirsmaller boll size and lower ginning percentage,the yield usually decreases...

1.The variation and deterioration of important economic characters of a commercialvariety of upland cotton can be detected after being grown for several years.For instance,shorter fiber increases in proportion,the lint index and the ginning percentage become loweredreadily.Variations on growth habit and boll and seed characters tend to enhance year afteryear.Though the degenerated plants possess better boll bearing capacity,but owing to theirsmaller boll size and lower ginning percentage,the yield usually decreases by 15.5-26.6 percentas compared with the normal plants.2.Degeneration is materially the adaptability of the cotton plant to its environmentalconditions.It can not be considered as declination in vitality.Degeneration is due mainly toheritable variability of the cotton plant.Under inferior cultural practices and unfavorablesoil and climatic conditions,and under the action of natural selection,characters favorablefor with-standing adverse conditions get enhanced.And on the other hand,the importanteconomic characters become deteriorated.Varietal mixture exerts influence upon degeneration,nevertheless it is not an importantcause3.Measures recommended for improving the seed quality and preventing degenerationare:(1)continuous selection of promising plants for seed multiplication,(2)better culturalpractices,and(3)appropriate handling of seeds.

棉种“退化”是对环境条件的一种适应性,而不是生活力衰退。引起棉种“退化”的原因,主要由于棉种的变异性较大,在不良的农业技术和不利的气候因素的影响下,通过自然选择作用的结果。品种混杂对棉种“退化”也有很大影响,但只是加重“退化”的因素,而不是引起“退化”的主要原因。不断地加强人工选择,并改善栽培管理条件,做好棉种管理等工作,是提高棉花良种种性防止“退化”的根本措施。

The open-pollinated seeds were collected from 14 mature natural stands of Cryp-tomeria fortunei in Fujian Province. The seed quality and seedling growth have been studied in laboratories and nurseries in three forest farms. It has been found that among different stands or different individual trees in the same stand there are significant differences in most of the characters studied. The height growth of the seedlings showed high inheritance stability; the variance component of the family x site...

The open-pollinated seeds were collected from 14 mature natural stands of Cryp-tomeria fortunei in Fujian Province. The seed quality and seedling growth have been studied in laboratories and nurseries in three forest farms. It has been found that among different stands or different individual trees in the same stand there are significant differences in most of the characters studied. The height growth of the seedlings showed high inheritance stability; the variance component of the family x site interaction was very small and insignificant(0.38%)- The estimated family broad sense ; heritability in the height growth was 0.905.

风媒授粉种子采自福建省14个成熟的柳杉天然林。在实验室和3个林场的苗圃中研究了种子品质和苗木的生长情况,发现我们所研究的大多数性状,在不同林分间或同一林分不同单株间都存在有显著的差异。一年生苗木高生长表现出高度的遗传稳定性,家系×地点互作方差分量非常小(0.38%),是不显著的。估计的家系高生长广义遗传力为0.905。

The determination of the seed quality of forest trees by soft X-ray apparatus HY-35, used in agriculture, gave satisfactory results. Besides X-ray film and 120 film, the enlarging paper may be used as sensitive material, and the images could be formed by direct exposure at the dark condition. Developing process in dark room could be ommited. So it is not only rapid, accurate, but also economical. Nevertheless, the exposure time should be appropriately prolonged. For seeds of pinus silvestris var....

The determination of the seed quality of forest trees by soft X-ray apparatus HY-35, used in agriculture, gave satisfactory results. Besides X-ray film and 120 film, the enlarging paper may be used as sensitive material, and the images could be formed by direct exposure at the dark condition. Developing process in dark room could be ommited. So it is not only rapid, accurate, but also economical. Nevertheless, the exposure time should be appropriately prolonged. For seeds of pinus silvestris var. mongolica, the structural potentiality (AP value, potential germination capacity) calculated by formulation on the basis frequencices of different classes of development on the X-ray photographs and the classified germination percentage to be measured is very similar to the actual germination percentage.For the samara of Acer negundo, the successful photograph of the dynamic states of the seed development by soft X-ray apparatus have also been obtained.After being impregnated in BaCl_2 solution (20%) as a contrasting agent for 24 hours, the seeds of Acer negundo was photographed by X-ray. It obviously showed that it is dark on the negative and light on the positive.We also obtained satisfactory results to the seed quality of larix gmelinii, Picea koraiensis, Pinus tabulaeformis, P. koraiensis, P. pumila, Juniperus rigida, Jilia amurensis, J. mandshurica by soft X-ray apparatus.

国产HY-35型农用软X光机检验林木种子品质效果良好。感光材料除用X光胶片、120胶片外可用放大纸在黑暗条件下,直接照射一次成像,减少了第二次暗室印象程序,快速、准确且经济,但曝光时间应适当加长。樟子松(Pinus sylvestris var mongolica Litv)种子,根据图片上的发育级频率及测定的归约系数按公式计算结构潜力(AP值,即潜在发芽能力)与实际发芽率极为近似。 用软X光机拍摄种子发育动态时糖槭(Acer negundo)翅果获得了成功的照片。 用BaCl_2作衬比剂20%浓度溶液、浸泡糖槭种子24h后拍片,明显地反映出种子生活力低的负片上色深、正片上色浅。 我们还对兴安落叶松、红皮云杉、油松、紫椴、糠椴、杜松、偃松等种子用软X光机进行品质检验获得了良好的结果。

 
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