20 July 2004, Volume 1 Issue 4

    

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试验研究
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  Effects of Different Pretreatment on Survival Rate of Pepper Microspore

  Wang Ye;Zhang Baoxi;Lian Yong;et al.

  . 2004, 1(4): 4-6.

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  The effects of low temperature,high temperature,sugar-free,colchicum and mannitol pretreatments on isolated microspore cultivation were studied. The result showed that 4 ℃ and sugar-free pretreatments significantly enhanced the survival rate of isolated microspore for all cultivars. The induction effect of sugar-free pretreatment on isolated microspore of 83-58 was the best. As compared with control, survival rate of isolated microspore on sugar-free medium increased 7.8 times and reached 43.33 % , and ...
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  Screening on Identification Indices of Chilling Tolerance in Melon

  Sun Yuhong;Xu Yuejin;Peng Jinguang;et al.

  . 2004, 1(4): 7-10.

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  With different low temperature treatments, seven biochemical and physiological indices of chilling tolerance(seed germination,the chilling index of controlled low temperature condition,electric conductivity percentage of seedling leaves,the changes of its soluble sugar content,Pro content,POD activity,MDA content) and their correlationships were studied using ten melon cultivars. The result shows that the seed vigor index at 18 ℃, chilling index of controlled low temperature condition,electric conductivity ...
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  Preliminary Study on Vitrification Cryopreservation Technology of Edible Lily Germplasm

  Zhang Yuqin;;Li Xixiang;Ma Qing;et al.

  . 2004, 1(4): 11-13.

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  In order to study conservation technology of lily,the cryopreservation of lily shoot tips by vitrification was studied. The shoot-tips were preculture on MS medium with 0.5 mol·L -1 sucrose for 2 days and then the tip tissue with the size of 2-3 mm was dehyrated with a vitrification solution(100 % PVS 2) for 20 minutes at room temperature. After new vitrification solution was replaced.The materials were plunged into liquid nitrogen. After 48 h,the material was taken off from liquid nitrogen and th...
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  Effect of Defoliation on Gall Swelling of Zizania caduciflora

  Jiang Jiezeng;Qiu Jiejuan;Cao Beisheng;et al.

  . 2004, 1(4): 14-16.

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  Comparative studies were conducted on the swollen culms at different defoliation treatments when zizania gall began to swelling with two water bamboo varieties. The results showed that dry weight and fresh weight had no notably difference at the early period of swollen gall development, and there were no markable influences on gall swelling after removing the leave.But afterwards the dry and fresh weight of swollen gall descended observably when all leave and sheath were cut. Defoliation in all plant engend...
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  Effect of Different Plastic Film Mulch on Growth and Yield of Potato in Spring

  Xu Kangle;Mi Qinghua;Xu Kunfan;et al.

  . 2004, 1(4): 17-19.

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  The effect of different plastic film mulch on growth and yield of potato were studied. The result indicated that black film, spectrum transformation film, and colorcomnination film mulch all had better effect on reducing soil temperature than the control, and which the spectrum transformation film was the best one, followed by the colorcomnination film. Therefore, potato seedlings with spectrum transformation film mulch and colorcomnination film mulch came up earlier, the plants grew better, and the yield w...
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  Study on Age and Nutritive Area of Tomato Seedlings Grown in Plug Tray

  Zhao Rui;Chen Junqin

  . 2004, 1(4): 19-21.

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  The effect of nutritive area on growth of tomato seedlings were gradually increased along with the age of seedlings becoming elder. It is recommended to transplant middle age seedlings by evaluation of effects of seedling age and plug tray nursery area on yield formation. Seedling age and nursery area had significant influences on yield formation, of them, there were no significant differences in tomato total yield among seedling ages, while there were significant differences among nutritive area in tom...
品种选育
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  A New Processing Red Hot Pepper Cultivar──‘Longjiao No.8’

  Zhang Hui;Zhang Xiaodong;Zhan Yun;et al.

  . 2004, 1(4): 22-23.

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  Longjiao No.8 is a processing red hot pepper cultivar with super-early maturity, good marketable characters, strongly hot, high red pigment, resistant to anthracnose and bacterial spot, tolerant to TMV and pepper phytophthora blight. It takes 120-130 days from sowing to the first harvest.Its total yield reaches 37.7 t·hm -2 in open field. Average fruit weight is 17 g. It is suitable to cultivate in cold area.
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  A New Tomato Variety ──‘Jinfanqie No.5’

  Liu Guizhi;Li Jielin;Niu Xiwu;et al.

  . 2004, 1(4): 24-25.

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  Jinfanqie No.5 is a new middle-late tomato cultivar developed by crossing inbred line Shandong B6 with F862.Its plant is indeterminate and vigorous. It has big round shaped red fruits with good quality. Average fruit weight is 350 g. It is resistant to TMV and early blight. Its yield is about 90-112 t·hm -2 . It can be well cultivated in open fields.
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  A New Chinese Cabbage F_1 Hybrid──‘Zhongshu No.6’

  Fang Shugui;Chen Wenhui;Zeng Xiaoling

  . 2004, 1(4): 25-26.

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  Zhongshu No.6 is a new Chinese cabbage F 1 hybrid developed by crossing male-sterility line 98-2-1 with inbred line F-3-2-3 bred from cultivar Fengkang 70 by selfcrossing for many generations. It is high resistant to downy mildew, virus and soft rot. The head is overlapping, round and ovate. It can be harvested in 60-65 days after sowing . The average weight of single head is about 2.0 kg. It yields 60-75 t·hm -2 in South China.
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  A New Bitter Gourd F_1 Hybrid——‘Zaolukugua’

  Zhang Changyuan;Luo Shaobo;Luo Jianning;et al.

  . 2004, 1(4): 27-28.

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  Zaolukugua is a new bitter gourd F 1 hybrid developed by crossing high female line 812 with inbred line 948. It has early maturity,growing vigorously. The fruit is long conicform, with light green skin, 24-27 cm in length, 5.5- 5.7 cm in diameter, 1.0 cm in thickness of flesh. The average fruit weight is 300 g. The average yield is 52.5 t·hm -2 . It is tolerant to hot and cold climate, middle resistant to fusarium wilt and powdery mildew.
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  A New Muskmelon F_1 Hybrid──‘Zaohuanghou’

  Geng Shoudong;Zhang Hui;Liao Xinfu;et al.

  . 2004, 1(4): 28-29.

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  Zaohuanghou is a new F 1 hybrid. It takes 84 days from sowing to harvest.The fruit is oblong shape,gold yellow rind with an attractive appearance,soft and crisp flesh,13 %-14 % of sugar content (highest 16 %),and is good for transportation.Average fruit weight is 3-4 kg and average yield is about 37.5-45.0 t·hm -2 .
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  A New Winter Squash F_1 Hybrid──‘Longyuanlixiang’

  Ni Shujun;Wen Ling;Wang Gang;et al.

  . 2004, 1(4): 30-31.

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  Longyuanlixiang belongs to early-maturing winter squash, female parent 93-12-8 and male parent 93- 9-7 were both inbred lines which were segregated from Japan and South Korean winter squash variety. It takes 80 days from sowing to harvest. The fruit is oblate with orange flesh, high edible rate, and tastes sweet, soft and floury. Average fruit weight is 2.0 kg. It is middle resistant to powdery mildew and virus.Its yield is over 50 t·hm -2 .
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  A New Cowpea Variety ──‘Lianjiang No.1’

  Chen Qinbin;Miao Meihua;Xue Ping;et al.

  . 2004, 1(4): 32-33.

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  Lianjiang No.1 is developed by system selection from 6 local varieties. It pods on main vine and blooms at 4th-5th node. The average pod is 72.8 cm in length,with light green color.Its yield is 33 t·hm -2 . It is early-maturing,high resistant to rust and dark mildew, fine character for commodity and is suitable to be cultivated in summer and autumn in the region of Yangtze River.