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tetraploid watermelon
相关语句
  四倍体西瓜
     Study on the Embryonic Development of Low Fertility Tetraploid Watermelon
     四倍体西瓜低稔性胚胎发育研究
短句来源
     Since the first tetraploid watermelon was obtained in 1939,polyploidy breeding has always been the focus of watermelon breeding.
     从1939年获得第一个四倍体西瓜以来,多倍体育种就一直是西瓜育种的一个热点。
短句来源
     Fusarium wilt(Fusarium oxysporum f.sp.Niveum) resistance in 51 accessions of tetraploid watermelon germplasm was identified in the seedlings through artificial inoculation,and inheritance of resistance was studied by analysis of variance of resistance in triploid watermelon combinations which were made with tetraploid and diploid watermelon using incomplete diallel mating method(NCⅡ).
     采用苗期接种法对51份四倍体西瓜种质资源进行枯萎病抗性鉴定,并选择不同抗性的四倍体西瓜与二倍体西瓜按NCⅡ杂交设计配制三倍体西瓜组合,通过方差分析研究四倍体西瓜的枯萎病抗性遗传规律。
短句来源
     Study on the Grafting for Tube-Cultured Seedlings of Tetraploid Watermelon
     四倍体西瓜试管苗嫁接研究初报
短句来源
     The breeding of tetraploid watermelon by tissue culture
     利用组织培养进行四倍体西瓜育种
短句来源
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  型西瓜同源四倍体
     A Study on the Induction of Tetraploid Watermelon with Small Fruits and its Properties
     小果型西瓜同源四倍体的诱导及其特性研究
  “tetraploid watermelon”译为未确定词的双语例句
     Study on Induced Effects of ORYZALIN Treatments on Tetraploid Watermelon
     ORYZALIN处理对西瓜四倍体诱变效果的研究
短句来源
     The pollen grains of the tetraploid was spheroidal with 3,4 and more apertures,average pollen's P/E ratios was 1.111; Heteromophic, adhesive and shrivelled pollen were observed on tetraploid watermelon.
     四倍体花粉为圆球形 ,P/E值为 1 111,有 3孔沟 ,4孔沟 ,多孔沟 ,其中有异形花粉、粘连花粉和空瘪花粉等 ;
短句来源
     5.Each of IAA,IBA and NAA could make the tetraploid watermelon plantlets root. IBA was the best. When IBA was 0.2~0.3mg/L , inoculated about l~2cmhigh stem with shoot tip ,the rooting rate , No.
     5.IAA、IBA、NAA对西瓜四倍体组培苗都有促进生根的作用,其中IBA的效果最好,适宜的浓度范围为0.2~0.3mg/L;
短句来源
     A Study on the Increase of Induction Frequency of Tetraploid Watermelon
     提高西瓜四倍体诱导率的研究
短句来源
     It was the first report that the tube-cultured seedlings of tetraploid watermelon were grafted on the fig-leaf gourd germinated 2 days, and 100% survival ratio could be reached.
     首次进行了西瓜四倍体苗的试管内嫁接研究,发现砧木苗龄和嫁接方式影响着嫁接的成活率,以2日龄黑籽南瓜做砧木进行劈接,可达100%的成活率。
短句来源
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  tetraploid watermelon
A simple protocol for micropropagating diploid and tetraploid watermelon using shoot-tip explants
      
Seven tetraploid watermelon lines developed by colchicine treatments were compared with their diploid counterpart for plant, flower, fruit, seed and qualitative characteristics.
      
Comparative study on vegetative, reproductive and qualitative traits of seven diploid and tetraploid watermelon lines
      
The possible use of this gene transfer system in the improvement of tetraploid watermelon cultivars and the use of male-sterile tetraploids in the production of seedless triploid watermelons is discussed.
      
A recessive male-sterility (ms) gene was transferred from a diploid to a tetraploid watermelon (Citrullus lanatus(Thunb.) Matsum and Nakai) line through a series of controlled pollinations.
      
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Propagation by grafting is an effective means of protecting watermelon-from soil borne diseases and shorten the rotation cycle.An experiment using 3 varieties of Cucurbita moschata,C.maxima and eagenaria lecantha as stocks was carried out to compare their compatibility and also their effect,on yield.It was found from the results that the lagenaria leucantha stock had the highest compatibility,and Cucurbita moschata stock the poorest.Owing to the fact that the root system of the grafted seedling extended extensively...

Propagation by grafting is an effective means of protecting watermelon-from soil borne diseases and shorten the rotation cycle.An experiment using 3 varieties of Cucurbita moschata,C.maxima and eagenaria lecantha as stocks was carried out to compare their compatibility and also their effect,on yield.It was found from the results that the lagenaria leucantha stock had the highest compatibility,and Cucurbita moschata stock the poorest.Owing to the fact that the root system of the grafted seedling extended extensively and had strong fertilizer uptaking ability,there were yield increases in varying degree.Results also showed that for the seedless watermelon and tetraploid watermelon,grafting on even more significant yield-increasing effect.The grafting method used was top-grafting,and 600-800 plants could be grafted each person per day.If appropriate measures such as maintain-ning the proper temperature and moisture and shadimg were taken,more than 90% of the grafted plants might survive.

嫁接栽培是防治土壤传播西瓜病害、缩短轮作周期的有效途径,本文利用中国南瓜、印度南瓜和葫芦的三个品种作砧木,比较其亲和力和产量的影响,结果认为葫芦砧的亲和力最强,印度南瓜次之,中国南瓜最差,试验地虽未发病,但由于嫁接苗根系范围广、吸肥力强等多方面的作用,有不同程度的增产效果,试验还表明嫁接对无子西瓜和四倍体西瓜的增产效果更为显著。 嫁接方法是顶插接,每人每天可接600—800株,如保温、保温、遮荫、除萌等措施得当,成活率可达90%以上。

The experiments for increasing the induction frequency of tetraploid watermelon were made with three methods of colchicine treatment, with 6 diploid varieties of watermelon as materials. When the small leaves were peeled off and the bare growth tips were treated with colchicine drops, the variation frequency (the number of variated plants / the number of suvival plants) was 52%, and the treatment efficiency (the number of variated plants/the number of treated plants) was 30.4%. When the bare growth...

The experiments for increasing the induction frequency of tetraploid watermelon were made with three methods of colchicine treatment, with 6 diploid varieties of watermelon as materials. When the small leaves were peeled off and the bare growth tips were treated with colchicine drops, the variation frequency (the number of variated plants / the number of suvival plants) was 52%, and the treatment efficiency (the number of variated plants/the number of treated plants) was 30.4%. When the bare growth tips were daubed with Lanolin paste mixed with colchicine, the variation frequency and treatment efficiency were 61% and 29.4%, respectively. When the growth tips were covered with small leaves they were immersedinto colchicine solution, the variation frequency and treatment efficiency were 39.1 % and 23.7%, respectively. The mentioned methods were much better than the conventional methods

对6个二倍体西瓜品种进行了提高秋水仙素诱导率的试验研究.结果表明,剥去生长点外幼叶后用秋水仙素溶液滴苗、涂抹处理,其变异株率分别为52%和61%;浸芽处理的变异株率为39.1%.以上处理方法显著优于并可代替常规的滴苗、涂抹和浸种方法.

‘Mimei tetraploid’,a new watermelon variety,was obtained successully in 1980 by in-ducing diploid watermelon with colohcine in 1975.It was a superior tetraploid watermelonvariety with good combining ability.This variety can be directly cultivated as commodity wa-termelon,but it is mainly used as parents of hybrid breeding,F_1 hybrids of tetraploid andtriploid seedless watermelons.‘Mimei seedless No.1’,a new variety of triploid seedless wa-termelon,was bred with‘mimei tetraploid’as...

‘Mimei tetraploid’,a new watermelon variety,was obtained successully in 1980 by in-ducing diploid watermelon with colohcine in 1975.It was a superior tetraploid watermelonvariety with good combining ability.This variety can be directly cultivated as commodity wa-termelon,but it is mainly used as parents of hybrid breeding,F_1 hybrids of tetraploid andtriploid seedless watermelons.‘Mimei seedless No.1’,a new variety of triploid seedless wa-termelon,was bred with‘mimei tetraploid’as mother,and had been planted in many areas.It is the most valuable tetraploid watermelon variety.It was passed by the achievement ap-praisal of Department of Agriculture in 1990 and won the second prize of science technologyprogress of Department of Agriculture in 1991.

‘蜜枚四倍体’是1975年用秋水仙精诱导二倍体西瓜,1980年选育成的.经过组合选配试验、品种比较试验、病菌孢子接种试验及生产栽培,确认是一个配合力强的优良四倍体西瓜品种.该品种可直接应用于生产,但更多地是用作杂交育种、用作四倍体杂交一代品种和三倍体无籽西瓜品种的亲本.用它作母本已选育出‘蜜枚无籽一号’等三倍体西瓜新品种,并大面积生产载培.

 
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