01 August 2014, Volume 1 Issue 8

    

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  Chemical Components and Efficiency of Cucumber Seeds

  TIAN Gui-Li, MIAO Han, ZHANG Sheng-Ping, WANG Ye, GU Xing-Fang

  . 2014, 1(8): 7.

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  Cucumber（Cucumis sativus L.）seed is rich in fatty acids，plant sterol，sugar and glycosides，volatile oil，and various inorganic elements，so it can be used as a kind of nutritional health food．Besides，because of its high medical value，the chemical components of cucumber seeds have become a hot topic for domestic and foreign researchers in recent years．This paper reviewed the research progress and achievements gained in cucumber seed′s chemical components and their efficacies．It also prospects the future development direction of this research field．
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  Studies on High Efficient System for Microspore Culture Technology of Chinese Cabbage

  LI Fei, ZHANG Shu-Jiang, ZHANG Shi-Fan, ZHANG Hui, SUN Ri-Fei, ZHANG Zhen-Xian

  . 2014, 1(8): 12.

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  Taking Chinese cabbage〔Brassica campestris L. ssp. pekinensis（Lour）Olsson〕‘Jihong 82’，some of #534DH and #438 population as testing material，studies the effect of mechanical extraction and artificial extrusion on micro-spore viability and extraction quantity．The result indicates that mechanical extraction can replace the artificial one，get multiple samples during short period of time，and rapidly adjust the concentration of microspores culture．40 suitable buds are collected in 5 mL centrilfuge tubes，3 000 r·min-1 micro-spores gained by 10 s smashing extraction are isolated in 25 mL NLN-13 medium．Thus，micro-spore concentration is insured in suitable culture scope，and successfully induced to embryogenesis．
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  Brief Report on Chinese Cabbage Male Sterile Line MS200712

  ZHANG De-Shuang, ZHANG Feng-Lan, YU Yang-Jun, ZHAO Xiu-Yun, YU Shuan-Cang, WANG Wei-Hong, SU Tong-Bing, LU Gui-Xiang

  . 2014, 1(8): 17.

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  Creation and abortive mechanism of new male sterile lines are hot-topics on Chinese cabbage breeding．F1 hybrid crossing Brassica allohexaploid（AABBCC，n=27），which owns A，B and C chromosomes simultaneously，with Chinese cabbage variety of‘Jinchun’was obtained．Then the F1 as a male parent was crossed with Chinese cabbage variety of‘Yihe No. 5’．Thus male sterile MS200712 was founded due to multiparents crossing．MS200712 owned yellow petal and light-yellow anther．The anthers were regressive，which were 100% male sterility．Stigma of MS200712 was normal and nectaries were vigor. Meanwhile 832172，male parent of‘Beijingnew No. 3’was crossed with MS200712，and male sterile MS20071208-916 was obtained．
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  Effects of Arbuscular Mycorrhizal Fungi Inoculation at Different Stage on Yield and Nutrient Quality of Cucumber（Cucumis sativus L.） in Plastic Tunnel

  LI Cong, HE Chao-Xing, YAN Yan, LI Yan-Su, YU Xian-Chang, Martina Janouskova Miroslav

  . 2014, 1(8): 21.

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  This experiment studied the effect of inoculating arbuscular mycorrhizal fungi at different stages on cucumber yield and nutrient quality in plastic film greenhouse. The results showed that the yield of cucumber inoculated with Glomus intraradicese（GI） at seed sowing and transplanting stages could be increased by 54% and 34%，respectively as compared with the non-inoculated control. Inoculation at seed sowing stage，the chlorophyll content in cucumber leaves was significantly increased by 14.7%-17.7%，compared with that of the control. The nitrate contents of cucumber inoculated at seed sowing and seedling transplanting stages were decreased by 9.4% and 15.0%，respectively comparing with the control. While their total sugar contents were increased by 8.9% and 7.1%，respectively comparing with the control. The crude protein content in cucumber inoculated at seedling transplanting stage increased by 4.6% as compared with the control. The VC content in cucumber inoculated both at seed sowing and seedling transplanting stages were increased significantly. These results indicated that GI inoculum might improve cucumber growth，increase its yield and improve its nutrient quality.
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  Characterization of Soils Bacterial Community Structures in Rhizospheres of Tomatoes Infected with Bacterial Wilt and Its Non-infected Plants

  YANG Shang-Dong, ZHAO Jiu-Cheng, GUO Yi-Juan, WU Jun, LONG Ming-Hua

  . 2014, 1(8): 25.

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  A Polymerase Chain Reaction-Denaturing gradient gel electrophoresis（PCR-DGGE）technology was used to analyze the soil bacterial community structure in rhizospheres of tomato infected by bacterial wilt and non-infected plants．The results showed that the indices of diversity（Shannon-Wiener index），richness and evenness of bacterial community in rhizosphere soils of non-infected plants were 2.217，14 and 0.840， respectively．In contrast，the same indices in rhizosphere of tomato infected by bacterial wilt were 1.579，10，0.686（wilting slightly）and 1.571，7，0.807（wilting severely）．Meanwhile，the indices of diversity and richness were decreased with the wilting degree of infected plants.
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  Studies on Nutrient Components Change during Chieh-qua Fruit Development

  LIU Zheng-Guo, WANG Peng, CHEN Yong

  . 2014, 1(8): 30.

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  In order to study the dynamic change of nutrient contents in the development of chieh-qua
  （Benincasa hispida Cogn．var．chieh-qua How.）fruit，the contents of VC，organic acid，soluble sugar and soluble protein were analyzed taking 5 chieh-qua cultivars‘Nanningmaojiegua’，‘Meihua No.5’，‘ 7-2-1-4-2-1-2-2’，‘GF-7-1-1’ and‘ CK-3-4-3-2-1-3’ as experimental material during 10，20，30，40 days after pollination．The results showed that the changes in nutrient components of VC，organic acid，soluble sugar and soluble protein were basically similar during the fruit development of these 5 chieh-qua cultivars． Among them the VC contents reached the highest level in the early stage，then decreased rapidly，and tended to be stable at the mutured stage．While the organic acid contents showed a trend of decreasing first，then increasing． The soluble sugar content showed a gradually increasing trend．The soluble protein content showed a trend of decreasing first，then increasing slightly．However，there were differences between different cultivars．
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  Studies on Using Maize Straw and Mushroom Residue to Replace Peat as Nursery Media for Tomato and Sweet Pepper Seedlings

  DONG Chuan-Qian, YIN Cheng-Cheng, WEI 　Min, YANG Feng-Juan, SHI Qing-Hua, WANG Xiu-Feng, ZHANG Wei-Li

  . 2014, 1(8): 33.

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  The maize straw compost，mushroom residue compost，peat and vermiculite were used to composite different complex media for tomato（Solanum lycopersicum L．）and sweet pepper（Capsicum annuum L.var. grossum Bailey）seedling．Comprehensive indexes such as seedling growth，seedling index，physiological activity，indicated that the media of mushroom residue compost+ peat+ vermiculite（1∶1∶1，V/V）had the best effect on tomato seedling，the next was the media of maize straw compost+ peat+vermiculite（1∶1∶1，V/V）．The media of maize straw compost+vermiculite（2∶1，V/V）had the best effect on sweet pepper seedling，and the next was mushroom residue compost+peat+vermiculite（1∶1∶1，V/V）．The results showed that mushroom residue compost and maize straw compost could improve the physical and chemical characteristics of complex media，promote tomato and sweet pepper seedling growth，and cultivate healthy seedlings with high quality．
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  A New Non-heading Chinese Cabbage F1 Hybrid—‘Sujun 028’

  HUANG Zhi-Yin, ZHANG 　Bin, WEN Feng-Ying, LIU Xiao-Hui, LUO Zhi-Min, WANG Chao-Nan, LI 　Mei

  . 2014, 1(8): 38.

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  Sujun 028’is a new non-heading Chinese cabbage F1 hybrid bred by crossing 2 selfincompatible lines 08-411-5s and 07-N2 kangre-3s．It grows fast with beautiful plant type．It is about 20 cm in height and about 25 cm in width．The leaf is glossy green and the petiole is short without wax powder．It is early
  maturing．In summer and autumn sowing，it takes only 20 days to bean waist．It can be planted with appropriate density．The best planting density is 8 cm in row spacing and 15 cm in line spacing．It is highly resistant to virus disease，downy mildew and resistant to soft rot．It has wide adaptability，and is suitable for summer and autumn cultivation all over the country．For winter and spring cultivation，it can be grown in open fields in the southern
  areas of the Yangtze River，but in the norther areas of the Yangtze River it has to be planted in protected fields．
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  A New Tomato F1 Hybrid with High Resistant to TYLCV—‘Dongnong 724’

  JIANG Jing-Bin, LI Jing-Fu, ZHANG He, KANG Li-Gong, CHEN Xiu-Ling, WANG Ao-Xue, XU Xiang-Yang

  . 2014, 1(8): 41.

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  Dongnong 724’is a new early maturing tomato F1 hybrid developed by crossing 09546 as female parent and 09611 as male parent．It takes 110-113 days from sowing to harvesting．This variety has strong growth vigor，long internode，tolerance to weak light and low temperature．Its leaves are sparse and erect．It is highly resistant to TYLCV（Tomato yellow leaf curl virus），ToMV，Fusarium wilt and Verticillium wilt．The fruit is of large size．The single fruit weight is 220-250 g．The matured fruit is pink and colorful with smooth and beautiful appearance．The average fruit firmness is 0.54 kg·cm-2．It has good commercial character for storage and transportation．The average yield is 165-225 t·hm-2 in protected fields．It is suitable for protected cultivation in
  early spring and late autumn all over China.
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  A New Tomato F1 Hybrid Specially for Protected Cultivation—‘Weikefen No.1’

  吕Jin-Fu , LI Mei-Qin, XUE Qi-Qin, LIU Xiao-Ming, WANG Xing-Cui, LIN Gui-Yu

  . 2014, 1(8): 44.

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  ‘Weikefen No.1’ is a new tomato F1 hybrid developed by crossing H10A as female parent and J10203 as male parent．It is specially for protected cultivation．It is of infinite growth type and with medium growth vigor．Its first inflorescence sites on 5-7th nodes of the main vine．It has continouse fruit setting ability． It is of early maturity．Its matured fruit is uniform pink in color without green shoulder，and with little tall round shape．The single fruit weight is 240-260 g．It can yield over 210 t·hm-2．Its fruit has stronger rigidity， super commodity and good taste．It is tolerant to storage and transportation．Its lycopene content is as high as 112 mg·kg-1．It is resistant to TYLCV（Tomato yellow leaf curl virus），blight，gray mold，leaf mold and root-knot nematode．It is suitable to be cultivated in late autumn， over winter and early spring in green house．  
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  A New Fruit Cucumber F1 Hybrid—‘Yuexiu No. 3’

  GU Zhang-Gen, YANG Guo-Zhi, YUAN Wei-　, YE Li-Hua

  . 2014, 1(8): 47.

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  ‘Yuexiu No. 3’is a new fruit cucumber F1 hybrid developed by crossing excellent inbred lines M79 as female parent and L48 as male parent．It is early maturing and gynoecious．It grows vigorously．Its fruit development period is 6-10 days and its entire growing period is about 125 days．The fruit is of short bar shape with green peel and smooth surface．Its flesh is chrisp and juicy，and light green in color．Its fruit is about 15 cm in length and 2.7 cm in width．The single fruit weight is about 80 g．It is highly resistant to powdery mildew，medium resistant to downy mildew and fusarium wilt．It can yield about 64.5 t·hm-2．It is suitable for cultivation in protected fields in Jiangsu，Zhejiang Provinces and Shanghai area．