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peach    
相关语句
  
    YOUNG EMBRYO CULTURE TECHNIQUES FOR SUPER-EARLY MATURING PEACH
    特早熟幼胚培养技术
短句来源
    PC-AHP Comprehensive Judgment on Economic Characteristics of Early Maturing Peach
    早熟经济性状的PC-AHP法综合评判
短句来源
    RAPD analysis for the relative peach cultivars
    亲缘关系相近的品种的RAPD分析
短句来源
    PROLINE AND ABSCISIC ACID ACCUMULATION IN WATER STRESSED MEIZI(P.MUME SIEB.ET ZUCC.),APRICOT(P.ARMENIACA L.)AND PEACH(P. PERSICA STOKE) IN RELATION TO DROUGHT RESISTANCE
    水分胁迫后梅杏脯氨酸脱落酸的累积及其与抗旱性的关系
短句来源
    Inberitance of Some Qualitative Traits in Dwarf Peach
    矮生若干性状遗传研究
短句来源
更多       
  
    YOUNG EMBRYO CULTURE TECHNIQUES FOR SUPER-EARLY MATURING PEACH
    特早熟幼胚培养技术
短句来源
    PC-AHP Comprehensive Judgment on Economic Characteristics of Early Maturing Peach
    早熟经济性状的PC-AHP法综合评判
短句来源
    RAPD analysis for the relative peach cultivars
    亲缘关系相近的品种的RAPD分析
短句来源
    PROLINE AND ABSCISIC ACID ACCUMULATION IN WATER STRESSED MEIZI(P.MUME SIEB.ET ZUCC.),APRICOT(P.ARMENIACA L.)AND PEACH(P. PERSICA STOKE) IN RELATION TO DROUGHT RESISTANCE
    水分胁迫后梅杏脯氨酸脱落酸的累积及其与抗旱性的关系
短句来源
    Inberitance of Some Qualitative Traits in Dwarf Peach
    矮生若干性状遗传研究
短句来源
更多       
  
    YOUNG EMBRYO CULTURE TECHNIQUES FOR SUPER-EARLY MATURING PEACH
    特早熟幼胚培养技术
短句来源
    PC-AHP Comprehensive Judgment on Economic Characteristics of Early Maturing Peach
    早熟经济性状的PC-AHP法综合评判
短句来源
    RAPD analysis for the relative peach cultivars
    亲缘关系相近的品种的RAPD分析
短句来源
    PROLINE AND ABSCISIC ACID ACCUMULATION IN WATER STRESSED MEIZI(P.MUME SIEB.ET ZUCC.),APRICOT(P.ARMENIACA L.)AND PEACH(P. PERSICA STOKE) IN RELATION TO DROUGHT RESISTANCE
    水分胁迫后梅杏脯氨酸脱落酸的累积及其与抗旱性的关系
短句来源
    Inberitance of Some Qualitative Traits in Dwarf Peach
    矮生若干性状遗传研究
短句来源
更多       
  桃树
    Variations of Stem and Root Sap Flow of Peach Tree Under Different Water Status
    不同水分状况下桃树根茎液流变化规律研究
短句来源
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  peach
When transferred onto plum and peach, the spider mite adapted to the new hosts in the second generation; however, on cherry and apricot, it adapted in the third generation.
      
This was particularly observed under stress plant growth conditions on phytotoxic peach substrates.
      
Quantitative assessment of the infection rate of the entomophthoraceous fungus,Zoophthora anhuiensis against the green peach aph
      
A two-step method was developed to quantitatively assess the infection rate of the entomophthoraceous fungus,Zoophthora anhuiensis (Li) Humber, on the green peach aphid,Myzus persicae (Sulzer).
      
Recoveries for each pesticide added to a peach sample were obtained after applying different extraction systems.
      
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The effect of early harvesting virus-free seed potatoes on reducing the rate of virus infection was investigated in the field of Yanqing,Beijing from 1984 to 1985.If potato haulms were cut off at the day after 10-15 days of peach aphis' immigration peak,the rate of virus infection was low,which was 0.08-0.25% in 1984 and 1.17-1.50% in 1985.If the potato haulms were not cut off,the rate of virus infection was high,which was 0.83% in 1984

1984~1985年,作者在北京延庆县田间观察马铃薯脱毒种薯早收对减少种薯感染病毒的效果。在桃蚜迁飞高峰后10~15天割秧的(以下简称割秧)病毒感染率很低:1984年0.08~0.25%;1985年1.17~1.50%。不割秧的病毒感染率很高:1984年0.83%;1985年3.30%。翌年挖取芽眼经病毒提取作PVX、PVY和TMA血清鉴定,割秧者呈阴性反应,不割秧者呈阳性。翌年将所得种薯栽种田间目测病毒症状,割秧者未见症状,不割秧者病毒株率5.5%。割秧每亩8000穴的亩产10克以上的种薯块数达32240~37600块,而不割秧正常密度的亩产10克以上种薯块数只16400~26800块。因此,早割秧密植不仅可以减少病毒感染,而且利于加大种薯繁殖系数。

In the present study, difference in physiological response to water stress in relation to drought resistance among Meizi, apricot and peach was stndied. There was a similar tendency to decrease in the content of water and protein and increase in the content of soluble sugar, free proline (PRO)and free abscisie acid(FABA) during water stress in Meizi, apricot and peach which are different from drought-resistance. These physiologial substanees had recovered to origiual levels after rewatering. During...

In the present study, difference in physiological response to water stress in relation to drought resistance among Meizi, apricot and peach was stndied. There was a similar tendency to decrease in the content of water and protein and increase in the content of soluble sugar, free proline (PRO)and free abscisie acid(FABA) during water stress in Meizi, apricot and peach which are different from drought-resistance. These physiologial substanees had recovered to origiual levels after rewatering. During water stress PRO accumulation capacity of drought-sensitivity species Meizi was stronger thart that of drought-resistance species peach and apricot, and the variation of ABA among them showed no difference. The correlation among PRO, ABA and drought-resistance was discussed.

抗旱性不同的梅、杏、桃对土壤干旱处理后的生理反应有相似的趋势,表现为叶片含水量降低,水势下降,蛋白质含量下降,可溶性糖含量上升,游离脯氨酸(PRO)急剧增加,游离态脱落酸(FABA)缓慢上升,复水后这些反应都有不同程度的恢复。干旱处理过程中,抗旱性最差的梅PRO累积能力高于抗旱性强的桃和杏,而ABA变化种类间差异不大。

Based on the practice of dwarf peach breeding, this study systematically analysed the inberitance of tree habit,flesh colour,and flower type in the parents,F_1 and F_2 hybrids. The male parent Shouxing Tao ( Prunus persica var. densa Mak. ) , a dwarf tree type with white flesh and showy flowers and the female parent Qiukui,a new peach variety with normal tree,yellow flesh and, non-showy flowers,were crossed in 1977,and 17 F_1 hybrid plants were obtained. Sib-mating was carried out between 2 excellent...

Based on the practice of dwarf peach breeding, this study systematically analysed the inberitance of tree habit,flesh colour,and flower type in the parents,F_1 and F_2 hybrids. The male parent Shouxing Tao ( Prunus persica var. densa Mak. ) , a dwarf tree type with white flesh and showy flowers and the female parent Qiukui,a new peach variety with normal tree,yellow flesh and, non-showy flowers,were crossed in 1977,and 17 F_1 hybrid plants were obtained. Sib-mating was carried out between 2 excellent F_1 individuals (77-24-2,77-24-6) in 1983,and 216 plants of 2 cross combinations (83-31,83-32) resulted. According to their genetic mode, tree habit, flesh colour and flower types were further proved to be each controlled by a pair of alleles,with the normal tree being completely dominant to the dwarf tree (Table 1), white flesh to yellow flesh (Table 3) and non-showy flower to showy flower (Table 4). These alleles appeared to follow the law of independent assortment, without linkage or interaction among them. Deduced from the pedigree,the genotypes of Shouxing Tao, Qiukui, 77-24-2 and 77-24-6 should be dwdwYyshsh , DwDwyyShsh, Dwd-wYyShsh, DwdwYyshsh respectively, and new yellow dwarf peach vareties for canning or dessert could be selected from F_2 hybrids of Shouxing Tao with heterozygous flesh colour (Yy). There were remarkable differences in diameter of trunk,height of trunk ,diameter of canopy,length of shoot and length of internodes between the normal and dwarf types (Table 2). The electropherogram patterns of water-soluble proteins in petioles, calyx tubes and petals differed between normal and dwarf types (Fig. l);white and yellow flesh (Fig. 2,Fig. 3);nonshowy flower and showy flowers (Fig. 3).

结合矮生桃育种实践,对其亲本、杂种F_1、F_2代之树性、肉色、花型的遗传动态进行了系统分析,进一步证实这3个性状各由一对等位基因控制,其中乔生型对矮生型、白肉桃对黄肉桃、小花型对大花型均呈完全显性;这三对等位基因分别呈独立遗传,无互作效应。根据遗传系谱,推断寿星桃基因型为dwdwYyshsh,可利用其肉色异质性(Yy),选育适宜加工或鲜食的矮生黄桃新品种。

 
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