球茎

• I . roles of dehydrins in plant tolerance to freezing and drought . accumulations of heat - stable proteins and dehydrins induced by dehydration , low temperature , osmotic stress , high salt or aba treatment were investigated in protocorm - like - bodies ( plbs ) ofdendrobium candidum . moreover , we described the relationship between these accumulations and the development of tolerance to stresses
  一、脱水蛋白对植物抗冻性和抗旱性作用研究以铁皮石斛类原球茎( plbs )为材料，研究脱水、低温、高渗、高盐和外源aba处理与诱导热稳定蛋白和脱水蛋白的关系，以及胁迫诱导蛋白的积累与各种抗逆性形成的相关性。
• The swede - field in which she and her companion were set hacking was a stretch of a hundred odd acres , in one patch , on the highest ground of the farm , rising above stony lanchets or lynchets - the outcrop of siliceous veins in the chalk formation , composed of myriads of loose white flints in bulbous , cusped , and phallic shapes
  苔丝和她的同伴开始动手挖瑞典萝卜的那块田地，是一百多亩的一大片，也是那个农场上最高的一块，突出在白垩质地层或者砂石混杂的地面上它的外层是白垩质岩层中硅质矿床形成的，里面混合着无数的白色燧石，有的像球茎，有的像人的牙，有的像人的生殖器。
• The advantages of plantain at high population density include potential to increase yields significantly , better crop cycle planning to harvest during best market conditions , optimum use of land because one hectare of high density plantain can produce as much as 3 - 5 hectares of conventional planting , high production of good quality corms used as seed for the next cycle and intensive management resulting in a lower incidence of pests , diseases and weeds
  大蕉密植的优势在于：有显著的增产潜力，有较好的生产周期以适应最佳市场条件，能高效利用土地（密植1公顷相当于通常的3 ~ 5公顷） ，可生产出可作为下季种子的大量优质球茎，集约管理可减少病、虫、草害的发生。
• Primers were designed according to the sequences of atcal , bocal , bobcal and boical gene , and pcr amplifications were performed with the genomic dna of brussel sprouts , kale and kohlrabi respectively , pcr fragments of about 1 . 6kb were obtained and designated correspondingly as bogcal5 " , boacal5 " and boccal5 "
  根据拟南芥atcal 、结球甘蓝bocal 、花椰菜bobcal和青花菜boical基因设计引物，对芸薹属植物抱子甘蓝、羽衣甘蓝和球茎甘蓝的基因组dna进行pcr扩增，均得到一段约1 . 6kb大小的pcr产物，分别命名为bogcal5 ’ 、 boacal5 ’和boccal5 ’ 。
• Banana seedlings inoculated with fusarium oxysporum f . sp . cubense race 4 appeared some symptoms , such as yellow leaves , browning corm tissue ( occured in the earlier period ) , wilting leaves , browning corm and pesudostem tissue , blacking roots ( occured in the middle period ) , and wilting , dying plants ( occured in the latter period )
  摘要用枯萎病菌4号生理小种接种香蕉苗后，观察发现：香蕉苗在发病初期出现了黄叶、球茎组织变褐症状；发病中期出现了叶片萎蔫、球茎组织变褐、假茎可见斑点状或线条状褐色病变、根变黑褐症状；发病后期出现了植株萎蔫、枯死等症状。
• However , the discrepancy has no remarkable affect on the relationship of them . 2 . sequence alignments between the three fragments of according cdna to find that boacal and boccal share 97 . 9 % identical percentage while the identity percentage between bogcal and boacal , boccal are 98 . 9 % , 98 . 2 % , respectively
  2 、对分离的三段序列对应的cdna序列之间进行了同源性比较，结果羽衣甘蓝和球茎甘蓝之间为97 . 9 ，抱子甘蓝同羽衣甘蓝和球茎甘蓝之间分别为98 . 9和98 . 2 。
• Reclamation , purification and linkage of them respectively , then sequencing and analyses of according gene structure were made , results show that the complete sequence length of corresponding pcr product from brussel sprouts , kohlrabi and kale are 1665bp , 1650bp and 1650bp , containing the first two exons and introns and 22bp of the third exon
  对各pcr产物分别进行回收、纯化、载体连接和序列测定及基因结构分析等，结果表明，该片段在抱子甘蓝、羽衣甘蓝和球茎甘蓝三种作物中的全长分别为1665bp 、 1650bp和1650bp ，包括相应基因的前两个外显子和内含子以及第三个外显子的22bp序列。