20 May 2001, Volume 1 Issue 3

    

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试验研究
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  Anther Culture under Low Temperature Stress and Chilling Tolerance Induction of Eggplant

  Zhao Fukuan;Gao Xiahong;Cheng Jihong;et al.

  . 2001, 1(3): 7-9.

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  Eggplant anthers were cultured under low temperature stress for induction of chilling tolerance using 6 varieties of eggplant as experimental materials. The results showed that chilling tolerant anther callus can be induced at 5-6℃,the differentiation frequency of chilling tolerant callus was 31.6% on MS+NAA (0.02mg·L -1 )+ZT (1.0mg·L -1 ) medium,the injury rate of regenerated plants from chilling tolerant callus was much lower than that of control varieties under low temperature stress.
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  Preliminary Study on the Mechanism of Continuous Cropping Cucumber Growth Inhibited by Cinnamic Acid in Cucumber Root Exudates

  Lü Weiguang;Zhang Chunlan;Peng Yu;et al.

  . 2001, 1(3): 10-12.

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  Cinnamic acid was applied in the fifth continuous cropping cucumber soil as root exudates.The results showed that cucumber growth,activity of root dehydrogenase,ATPase,soil microorganisms and nutrient uptake had been inhibited when cinnamic acid application was more than 50 mg·kg -1 soil.And the inhibition at a higher concentration was stronger than those at lower one.So the auto toxic effect of cinnamic acid was one of the factors of continuous cropping barrier in cucumber growth.
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  Identification of TMV and CMV in Peper in Chongqing Area

  Lin Qing;Lü Zhonghua;Huang Renzhong;et al.

  . 2001, 1(3): 13-15.

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  In 1997～1999,162 pepper samples with typical virus symptoms collected from fields in Chongqing were identified by the diagnostic hosts,stability tests and indirect ELISA. The result showed that the pepper virus diseases were mainly caused by complex infection of TMV and CMV. The infecting percentage of CMV and TMV were 79.0% and 54.2% respectively. CMV and TMV are the predominant causal viruses of pepper crop in Chongqing area. TMV infected pepper indepedently with 7.5% and CMV with 32.3%.
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  The Effects of Different Nutrient Levels on Photosynthetic Characteristics of Wasabia ( Wasabia japonica Matsum) Seedling

  Wu Zhen;Li Shijun;Zhuang Feiyun;et al.

  . 2001, 1(3): 15-17.

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  The effects of various nutrient levels on photosynthetic properties of Wasabia ( Wasabia japonica Matsum) seedling were studied. The results showed that increase of nutrient levels could raise the accumulation of assimilation product obviously at later stage of growth. During the whole growth period,photosynthetic characteristics of the plant were improved with the nutrient level raising. The nutrient accumulation and photosynthetic characteristics showed best at 1.0 concentration level of nutrient solut...
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  Effect of Fertilization on the Content of Nitrate in Flowering Chinese Cabbage

  Huang Shaoning;Shen Huashan;Wu Huaming;et al.

  . 2001, 1(3): 18-19.

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  The result of base line survey conducted in six vegetable production sites in shenzhen showed that the content of nitrate in flowering chinese cabbage ( Brassica Campestris L. ssp Chinensis Var. Utilis ) was higher than 3000mg·kg -1 . Half or all chemical fertilizer was replaced by EM organic fertilizer,then the contents of nitrate were reduced by 25% and 40% respectively. At sevent days before harvesting,spraying microelements of Mn,Mo,Zn and the mixture of them reduced the nitrate contents ...
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  Effect of Heat Treatment on Physiology and Quality of Asparagus Sprout

  Luo Zisheng;Xu Weiya;Xu Yufang

  . 2001, 1(3): 20-21.

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  Effect of heat treatment on physiology and quality of Asparagus sprout were investigated. The results showed that the respiration rate,released C 2H 2 content and decaying rate were inhibited,the declination of the content of VC and SOD activity were delayed.
品种选育
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  A New Type of Spring Radish F_1 Hybrid — ‘Jin Ruobo No.3’

  Wu Lingxuan;Hou Zhigang;Guo Suying;et al.

  . 2001, 1(3): 22-23.

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  The new F 1 hybrid Jin Ruobo No.3 is a type of spring radish,developed from male sterile line. It has characteristics of fast growing,good market quality,high winterness and anti spongy. It’s root is cylinder with red and smooth skin. Average root weight is 120g. The yield reached 37.5t·hm -2 . It takes 50 days to harvest from sowing and is suitable for growing in Shanxi and other provinces nearby.
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  A New Summer Squash F_1 Hybrid — ‘Lubaoshi

  Liu Yisheng;Wang Changlin;Wang yingjie;et al.

  . 2001, 1(3): 24-25.

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  Lubaoshi’is a new summer squash F 1 hybrid developed by crossing mosaic leaf summer squash inbred line 94011 as female parent with dark green skin summer squash inbred line 94001 as male parent. It has vigorous plants,and long rhabdoid fruits with dark green skin. Its yield under protected cultivation is about 75t·hm -2 and is 14.5%～28.3% higher than that of ‘Zaoqingyidai’. It has been extended to Beijing,Liaoning,Shandong,Ningxia,Jiangshu etc..
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  A New Hot Pepper F_1 Hybrid — ‘Longjiao No.2’

  Wang Lan Lan;Cheng Hong;Chen Lingzhi

  . 2001, 1(3): 26-26.

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  以地方品种猪大肠的突变单株育成的自交系 92 16 5为母本 ,以新疆伊力牛角多代自交系 932 6 0为父本配制的一代杂种陇椒 2号 ,熟性早 ,果实长牛角形 ,果面有皱褶 ,果长 2 3 .0cm ,肉厚 0 .2 5cm ,单果质量 35～ 40g ,果色绿 ,味辣 ,果实商品性好 ,品质优良 ,抗病毒病 ,耐疫病。一般前期产量 1845 .9kg·(6 6 7m2 ) -1,比对照增产5 4.0 % ;总产量 3 5 47.3kg·(6 6 7m2 ) -1,比对照增产 39.2 %。适宜于北方保护地栽培。
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  A New Tomato F_1 Hybrid — ‘Zheza 806’

  Yang Yuejian;Ma Zhongyi;Zhou Guozhi

  . 2001, 1(3): 28-29.

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  Zheza 806 is a new indeterminate F 1 hybrid. Its female parent line is T217 that selected from the progenies of the cross between processing variety Zhehong 20 and Manapal Tm 2 nv introduced from US. T217 has the gene to resist TMV and double recessive characteristics — yellowish leaf and green stem for easy to distinguish false F 1 seedlings. Male parent,87 122 4,is selected from Xiaojixin,a Shanghai local determinate variety. This hybrid F 1 suits plastic house cultivation in winter and early s...