20 March 2004, Volume 1 Issue 2

    

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试验研究
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  Study of Screening Indexes for Heat-tolerance Seedling Stage in Eggplant

  Zhang Zhizhong;Wu Jinghua;Huang Biqi;et al.

  . 2004, 1(2): 4-7.

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  The physiological and biochemical items variations of different eggplant varieties under the heat stress, were studied in the experiment and the velated indexes were screened. The membrane damage extent under high temperature, proline content, transpiration rate and root activity were suggested as the select indexes for the heat-tolerance breeding.
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  Effects of Nitrogen Supply Levels on Greenhouse Tomato Growth and Nitrogen Utilization in Beijing Region

  Bai You ai~;He Jiande~;Chen Qing~;et al.

  . 2004, 1(2): 7-9.

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  The effect of different nitrogen supply levels on tomato growth and nitrogen utilization were studied in the greenhouse of Beijing region in spring. The results showed that the marketable yield was highest when nitrogen applied rate was 225 kg·hm~(-2). However, the tomato yield decreased with applied N rate increasing. There was no significant effects on N、P、K uptake between applied nitrogen rates. In this experiment the optimum N supply level for greenhouse tomato in protected field(Extension Service Cente...
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  Effects of Deficit Irrigation on Dry Matter Distribution and Fruit Quality of Tomato in Protected Cultivation

  Qi Hongyan;Li Tianlai;Qu Chunqiu;et al.

  . 2004, 1(2): 10-12.

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  Liaoyuanduoli and Hongyu cherry tomato were used and four irrigation treatments were with 2,4,6 and 8 d intervals to irrigate, respectively. The results indicated that the soluble sugars, organic acid and the ratio of sugars/acid were increased in ripe fruit under water deficit, while the dry matter accumulation of plant increased and the growth of root was stimulated. The growth of upper fruit and dry matter accumulation decreased under serious water deficit obviously which resulted in the decline of avera...
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  Pattern of Potassium Accumulating in Stem Mustard

  Sun Xiaohong;Liu Huaqiang;

  . 2004, 1(2): 13-15.

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  The pattern of potassium accumulation in stem mustard F_1 hybrid(JL92-3A×JL155)was studied. The result indicated that the potassium accumulation in various organs met Logistic growth curve. Peak period of potassium accumulation in root was at 11.9-16.1 leaf age, in leaf was at 12.1-17.3 leaf age, in stem was at 14.4-17.9 leaf age. During the peak period of potassium accumulation, plant accumulated amount of potassium which accounted for over 65 % of whole growth stage.
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  Effects of Sucrose Concentration on Growth and Endohormone Concentration Variations of Tube-ginger

  Ginger;Tissue culture;Rhizome induction;Endohormone;

  . 2004, 1(2): 15-17.

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  With sucrose concentration increasing, the height of tube-ginger plant decreased, while propagation coefficient significantly increased. When sucrose concentration was more than 80 g·L~(-1), propagation coefficient decreased. In different treatments, concentrations of IAA and ZR varied little, but GA declined with sucrose concentration increasing when sucrose was from 20 g·L~(-1) to 50 g·L~(-1). Concentration of ABA in leaves varied a little but ABA in rhizome declined sharply on the contrary when sucrose c...
品种选育
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  A New Pepper F_1 Hybrid — Jiangshu No. 2

  Wang Shubin;Lin Jinbin;Pan Baogui

  . 2004, 1(2): 18-19.

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  Jiangshu No. 2 is a new middle-early maturing slight-hot-pepper F_1 hybrid developed by excellent inbreed 93018 crossing with inbreed 92162. It is resistant to TMV and anthracnose, and is tolerant to CMV. It is horn shaped, 60 g in weight, with smooth skin, slight pungent. The average yield is 52.5 t·hm~(-2). It is suitable to cultivate in both protected and open field. It has been extended in Jiangsu, Anhui, Shandong, Henan, Sichuan, and Hainan provinces.
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  A New Eggplant F_1 Hybrid — Heibei No. 1

  Gao Zhikui;Wu Zhanhui;Ren Shifu;et al.

  . 2004, 1(2): 20-23.

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  Heibei No. 1 is an excellent eggplant F_1 hybrid developed by crossing lines 98-24 with 98-8. It has vigorous growth, excellent merchandise quality and edible quality, low temperature tolerance, and transportation endurance. Its fruit is ball-shaped, purple-dark, and the index of fruit shape is about 0.93. The average fruit weight is 580 g. Heibei No. 1 is suitable for greenhouse and plastic tunnel cultivation in winter and autumn, and open field cultivation in the North China.
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  A New Cauliflower F_1 Hybrid — Xiahua No. 6

  Huang Congli;Li Chuanyong;Pan Aiming;et al.

  . 2004, 1(2): 22-24.

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  Xiahua No.6 is a new cauliflower F_1 hybrid developed by two self-incompatible lines. It has heat-tolerance, early maturity ranging from 50 to 55 days, multi-disease resistance, and suitable to be cultivated in both summer and autumn. The curd is white, semicircle, partly loose, with green stalk. Average curd weight is 0.50 - 0.85 kg. The yield is 30-45t. hm~(-2) and 20.5% higher than the control variety.
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  A New Sweet Corn F_1 Hybrid— Fengtian No. 1

  Chen Qinghua;He Xiaoming;Ye Shaowen;et al.

  . 2004, 1(2): 25-26.

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  Fengtian No. 1 is a middle maturity sweet corn F_1 hybrid developed by crossing line PY7 with line PB11. The F_1 hybrid has vigorous growth, and resistances to leaf spot, dwarf mosaic virus and stalk rot. The cylindrical ear is about 287 g in weight and 20.47 cm in length. The kernels are golden yellow, uniform and crisp with 17.65 % soluble sugar. The yield is about 13.5 t·hm~(-2). It is suitable for cultivation in spring and autumn in South China.
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  A New Summer Squash F_1 Hybrid — Chunyu No. 1

  Cheng Yong an;Zhang Enhui;Xu Zhongmin;et al.

  . 2004, 1(2): 27-28.

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  Chunyu No. 1 is a new and eady-maturing summer squash F_1 hybrid bred by crossing vivid green skin summer squash inbred line 9795 Qing-2 with white skin summer squash inbred line 007-30-1-1. It has vigorous growth, and long rhomboid fruits with vivid white skin. Its yield is about 72 t·hm~(-2) under protected cultivation and 11.4 % - 14.3 % higher than that of Zaoqing Yidai(CK). It has been extended in Shanxi, Gansu, Hebei provinces.
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  A New Chinese Cabbage F_1 Hybrid— Zibai No. 7

  Li Binghua;Zheng Shuhua;Li Jinghua;et al.

  . 2004, 1(2): 29-30.

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  Zibai No.7 is a new Chinese cabbage F_1 hybrid developed by crossing two self-incompatible lines 96-9 and 9542-2. It can be harvested in 60 days after sowing. The average head weight is about 2.5kg. Its yield is about 54-60t·hm~(-2).
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  A New Early Maturing Chinese Cabbage F_1 Hybrid— Lailu 60

  Jiang Shantao~;Li Zhongsheng~;Li

  . 2004, 1(2): 30-31.

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  Lailu 60 is a new F_1 hybrid of Chinese cabbage developed by across between two self-incompatible lines 96-1-4-2 and 96-3-5-60. It has early maturity, multi-disease resistances, heat tolerance, high yield with 35.5 t·hm~(-2). It can be harvested in 52 days after sowing.