20 July 2002, Volume 1 Issue 4

    

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试验研究
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  Chemical Identification of Gynoecious and Androecious Cucumber at Seedling Stage

  Chen Xuehao;Chen Yanping;Cao Beisheng;et al.

  . 2002, 1(4): 4-6.

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  Identification of gynoecious and androecious cucumber was conducted by using three chemical methods named BTB,NADH and TTC at seedling stage of cucumber. The results showed that the time of color altering of gynoecious cucumber extraction after adding into BTB was earlier than that of androecious cucumber extraction. The greatest difference of absorbed volume under 630nm existed between two types of cucumber within 5 hours after reaction with BTB. That is the right time to identify gynoecous and andro...
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  Breeding and Utilization of Chinese Onion Male-sterile 244A

  Tong Chengfu;Tang Chengying;Cui Lianwei;et al.

  . 2002, 1(4): 7-8.

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  Male-sterile plants were found in the seed field of Donglingbai Chinese onion. Six plants were selected and pollinated openly in the same year. At last three plants were harvested and their seeds were sown in three lines separately. In the second year, the plants from a line with high male-sterile rate made a one by one hybridization with the original mass. At the same time,male parent self-pollinated. According to the result for four generation s selection. male-sterile plant No.025 was selected at last ...
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  The Study of Substrate with Mycorrhiza on Cucumber Seedling

  Lu Guiyun;Chen Guilin;Qi Guohui

  . 2002, 1(4): 9-12.

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  The substrate treatments were the mixture of soil/sand (1∶0,1∶2,1∶4) and vermiculite. Cucumber seeds were sown with Glomus versiforme and CK. The results showed the infectionrates of GV were 48.48%-56.15% in mixture of siol and sand, was 37.82% in vermiculite. The most significant beneficial effects of GV are in substrate treatment No.2 (soil/sand=1∶2),which increased leaf area,dry weight and index of health seedling up to 44.09%,36.46% and 83.62% as compared with CK respectively. Therefore substrate treatm...
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  The Controlling Effects of Emulsion of Stemona, Chinaberry alkali and Tobacco alkali on Myzus persicae and Their Residual Test in Lettuce

  Gaoliang

  . 2002, 1(4): 12-14.

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  A botanical insecticide is made from stemona, Chinaberry and tobacco. The controlling effects of 1.1% emulsion diluted with 1500, 3000 and 6000 water on Myzus persicae were: indoors, 91.6%～99.6% after spraying 1,3 and 5 days; in the fields, the effects of it diluted with 800 and 1000 water were 90.6%～98.0% after spraying above same days. They were equal to or better than the results of 50% kangyawei wettable powder diluted with 2500 water. The residue of this insecticide disappeared quickly in the lettuce l...
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  Influences of Low Temperature and Poor Light on Grwoth and Photosynthesis of Tomato Seedling

  Huang Wei;Ren Huazhong;Zhang Fuman

  . 2002, 1(4): 15-17.

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  Influences of low temperature and poor light on growth and photosynthesis of tomato (Lycopersicon esculentum Mill.) seedling were studied in phytotron. Results showed that the increment of stem length,leaf expanding and net photosynthesis rate were reduced under the stress of low temperautre and poor light,but root vigor was not significantly influenced by the stress. The influence of low temperature was more significant than poor light stress. The responses were different between varieties.
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  Effects of IOA and R-6G on Mitochondria Inactivation of Cotyledon Protoplast of Non-heading Chinese Cabbage

  Hou Xilin;Cao Shouchun;She Jianming;et al.

  . 2002, 1(4): 18-19.

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  The report studied the effects of IOA and R-6G on mitochondria inactivation of cotyledon protoplast of non-heading Chinese cabbage 91 HQiu -21 (Aijiaohuang). The results were as follows:0.5mmol·L -1 IOA could reduce the plating efficiency from 15.0% to 6.6% at 25℃ for 20min. While 1.0mmol·L -1 IOA would make all protoplasts inactivated at 25℃ for 10min. 40μg·mL -1 R-6G can effectively inhibit the protoplast division and calli formation at 25℃ for 30min,so inactivated mitochondria with R-6G eases th...
品种选育
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  A New Cucumber F_1 Hybrid - Ganfeng 11

  Li Tinghong;Liu Guiying;Guo Lanxiang;et al.

  . 2002, 1(4): 20-22.

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  Ganfeng 11,a new F 1 hybrid of cucumber,is bred by crossing inbred line C80216 and Z85302. It has early maturity and is resistant to Fusarium wilt,Downy mildew,Becterial angular spot. The fruit is about 32.7cm long with green skin and short fruit stalk. The average fruit weight is about 250g with fruit index of 8.2. Its yield is 180t·hm -2,15% higher than that of CK. It is suitable to grow in energy-saving green house.
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  A New Bitter Squash F_1 Hybrid- Lubaoshi

  Chen Qinghua;He Xinzhou;Zhuo Qiyong;et al.

  . 2002, 1(4): 23-24.

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  F 1 hybrid Lubaoshi of bitter squash (Momordica charantia L.) was bred with inbred line a6-1-1(pistillate parent) and inbred line a2-1(pollen parent). It has conical fruits. It can be harvested 3-7 days earlier than control Yingyin and Suixin No.2 in spring. Its yield is over 45t·hm -2,over 15% higher than the two control cultivars. It is tolerant to anthracnose and powdery mildew, and can be cultivated in both open field and plastic funnel in spring and autumn in South China.
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  A New Cherry Tomato F_1 Hybrid- Sheng Guo

  Fang Ling;Zhang Qi an;Dong Yanxiang;et al.

  . 2002, 1(4): 25-26.

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  Sheng Guo is a new cherry tomato F 1 hybrid. It is indeterminate and resistant to TMV,wild and leaf mold,early blight,and deformed fruit. Fruits are red with SSC of 9%-9.5%. Average fruit weight is 14-16g,Average yield is 75t·hm -2. It is suitable to culture in Anhui province and its sourounding areas.
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  A Summer Squash F_1 Hybrid- Zhonghu No.3

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

  . 2002, 1(4): 27-28.

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  Zhonghu No.3 is a new summer squash F 1 hybrid developed by crossing white skin summer squash inbred line 94037 as female parent with early-maturing white skin summer squash inbred line 94012 as male parent. It has vigorous plant,and long rhabdoid fruits with white skin. Its yield under protected cultivation is about 75t·hm -2 and is 8.9%-19.9% higher than that of Zaoqingyidai . It has been extended to Beijing,Hebei,Shandong,Ningxia etc.
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  A New Summer Squash F_1 Hybrid- Meiyu

  Wu Yanrong;Liu Junshan;Pan Xiuqing;et al.

  . 2002, 1(4): 29-30.

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  Meiyu is a new F 1 hybrid of Summer squash. It has early maturity,high productivity,and resistance to diseases. The fruit is 26.6cm in length, 5.9cm in diameter, and 449g in average weight. The total yield is 72t·hm -2. It is suitable to grow under plastic funnel and plastic mulching.
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  A New Flowering Chinese Cabbage Variety- Lubao 70 Tian

  Liu Zizhu;Zhang Hua;Liu Yanhui;et al.

  . 2002, 1(4): 30-31.

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  Lubao 70 tian is a new mid-maturity variety of flowering Chinese Cabbage. It grows vigourously, the flower stalk is 22～26cm in height,1.5～1.8cm in diameter and 45g in average weight with dark green and high quality. It can be harvested in 39～45 days after sowing, It s total yield is 15～22.5t·hm -2. It has been grown is Guangdong, Guangxi, Hainan, et al.