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polyploid n.【生物學】多倍體。adj.多倍體的。

polypod

Based on extensive field observation and population sampling in 71 populations of 20 provinces , this dissertation investigates morphology , ecology , cytology , cytogeography and its sequences of this complex . the results show that a . ageratoides polyploid complex might be originated in northeastern china , from which it migrated along three different routes 本研究基于對我國20個省、市、自治區43個地點71個三脈紫菀復合體居群的野外觀察和采集,從形態學、生態學、細胞學、細胞地理學和分子生物學等各方面,對三脈紫菀多倍體復合體進行了綜合性研究。

Colchicine concentrations were four levels of 100 , 500 , 1000 and 2000 mg / l , and treatment periods were of 1 , 2 , 4 and 6 days for the former and 24 , 48 and 72h for the latter . the results showed that both the two methods can induce polyploid cells , but the former was better than the latter in the induction rate and operating 經染色體數目鑒定表明,這兩種方法都能有效的誘導四倍體細胞( 2n = 4x = 48 )的產生,而二倍體染色體數為2n = 2x = 24 ,但是加入培養基法無論在誘導率上還是在操作上都優于液體浸泡法。

In this study , systems of rapid propagation of the cultivars such as d . zingiberensis , d . panthaica and d . composite were setup to find the best way to meet the need of producing , and to establish the base of introduction , breeding and cultivar improvement of foreign dioscorea with high diosgenin ; in addition , there are two strategies to obtain polyploids combining with chromosome engineering : screeding natural mutations and mutation breeding were carred out on d . zmgiberensis . exploratively studies were done on rapid propagation of the three dioscorea plants . the result showed : explants of d . pathaica obtained the appreciate propagation efficency on ms + ba1 . 0mg / l + naa0 . 1mg / l , ms basic medium containing 6 . 0mg - 1 ba , l . 0mg - 1 kt and sucrose at 30gl - 1 or 60g1 - 1 was the appreciate medium for microtuberization 三種薯蕷屬植物離體再生體系培養條件的探索試驗結果表明:黃山藥外植體適宜的增殖培養基為ms + ba1 . 0mg / l + naa0 . 1mg / l ,微型塊莖誘導為ms + ba6 . 0mg / l + kt1 . 0mg / l + 3蔗糖,高濃度的蔗糖含量( 6 )能提高微型薯蕷的誘導率,但對其誘導起關鍵作用的還是ba的濃度;菊葉薯蕷增殖效果較好的培養基為ms + ba1 . 0mg / l ,以ms培養基為誘導微型薯蕷的最佳選擇,誘導率可達50 ;盾葉薯蕷最適宜的增殖培養基為ms + ba2 . 0mg / l ,在誘導微型薯蕷的實驗中發現,當ba濃度為6 . 0mg / l和8 . 0mg / l時, 15d左右節間處膨大形成綠色圓球狀小塊,但繼續培養其上則開始分化芽。

And the regenerated tetraploid and its diploid were different in inheritance . by the upper research , the best induction method of pepper polyploid and appropriate concentration and periods of colchicines were obtained . the acknowledge of polyploid was deeper via the morphological and cytological examination and peroxidase isozymes 通過以上研究,我們得到了辣椒同源四倍體誘導的最佳方法和秋水仙堿的最佳處理濃度和處理時間,并從過氧化物同功酶變化,輔以形態解剖學觀察、染色體鑒定,綜合分析,對多倍體的認識更加深入細致。

Pepper ( capsicum annuum l . ) is one of the important vegetables and condiments . in order to laying down the foundation for the selecting and breeding of polyploid of pepper , a experiment of induction polyploids of pepper by colchicines treatment in clones of pepper was carried out 本實驗用萌動的辣椒種子在ms培養基中培養獲得無菌苗,取下胚軸為外植體,在ms + 6 - ba2 . 0mg l + iaa1 . 0mg l培養基中誘導形成愈傷組織。

Stoma of polyploids ( include hexaploid and octoploid ) were larger and spaced father apart on the undersurface than diploids , the stoma density of triploids and tetraploids were 60 - 70 % of corresponding diploids , and the stoma density of hexaploids and octoploids were 30 - 40 % of diploids 73為三倍體和四倍體區別于二倍體共有的特征帶; itrai 70為四倍體的特征帶。 sod同工酶酶活性較弱,共分離6條帶, ro

Haploid organisms have one genome , diploid organisms have two homologous sets , polyploid organisms have many sets sometimes form the same ancestor ( autopolyploids ) and sometimes from different ancestor ( allopolyploids ) 單倍體生物有一個基因組;二倍體生物有兩個同源的基因組;多倍體生物有多個基因組,它們可能源于同一祖先(同源多倍體) ,也可源自不同的祖先(異源多倍體) 。

Polyploid watermelon has many virtues such as seedless , high yield , good tolerance and transportation , high resistance to plant diseases and insect pests , and also high central soluble solids content 摘要多倍體西瓜具有少籽、豐產、耐貯、對病蟲害抗性較強、抗逆性好、果實含糖量高等優點。

In this article , ways of polyploidy breeding , the identification of polyploidy , application of watermelon polyploidy , and the prospective of watermelon polyploid breeding are reviewed 文章概述了西瓜多倍體的產生途徑、鑒定方法,西瓜多倍體育種的應用以及研究新動向。

The technically effective system in inducement of cereal polyploid will conduce to creating a lot of new genetic resources with polyploid characters 建立多倍體誘導的高效性實用技術體系,將有助于盡快獲得大量的多倍體材料和新的遺傳資源或種質資源。

Polyploids generally thaw some good characters , for example , vigorous plant , higher biological yield , bigger seed , good quality and special resistantance 多倍體植株具有生長勢強、生物學產量高、籽粒大、品質好和抗逆性強等特點。

The content in the paper is included in the man - induced technique , biological characters of polyploid and the potential values 摘要綜述了禾谷類作物的人工誘導、生物學特征特性、多倍化過程中基因組的動態變化研究及其潛在價值。

Medicinal polyploid plants attract great attention because of their gigantic organs , high yields and important medicinal and economic values 摘要多倍體藥用植物因器官巨大,產量高,具有重要的藥用和經濟價值而倍受人們的關注。

By polyploid nature and high levels of heterozygosity of vast majority pasture plants , it was rather complicated to construct linkage maps of them 由于大多數牧草的多倍性和高度異質特點,牧草遺傳連鎖圖譜的構建相對復雜。

Some 60 of monocotyledons and 40 of dicotyledons are polyploid , as are 90 of ferns , many bryophytes , and some algae 60的單子葉植物和40的雙子葉植物、 90的蕨類植物、多數苔蘚植物以及某些藻類,都是多倍體。

It is extraordinarily important to select tetraploid lines for breeding sugar beet polyploid varieties 摘要四倍體品系選育是甜菜多倍體育種不可缺少的重要環節。

Study on polyploid induction of 2n gametes hybrid proyeny of lilium oriental 配子雜交后代多倍體誘導研究初報

Studies on polyploid induction of chinese jujube with colchicine 秋水仙堿誘導棗多倍體的研究

Advances of research on polyploid breeding of vegetable crops 蔬菜多倍體育種研究進展