15 November 2014, Volume 1 Issue 11

    

• Select all
  |

• Select
  Progress in Studying Effect of Weak Light on Photosynthetic Characteristics of Vegetable Crops

  HE 　Li, LUO 　Ying, WANG Zhi-Min, TANG Qing-Lin, SONG 　Ming, WANG Yong-Qing, YANG 　Yang, TIAN Shi-Bing

  . 2014, 1(11): 9.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  Photosynthesis is the basis for green plants survival. To grow normally under stress condition，photosynthetic characteristics of plants under low light stress have to change. In this paper，internal and external studies about weak light stress on crop photosynthetic paremeters， photosynthetic pigment，chlorophyll fluorescence， photosynthetic enzyme， and leaf structure were recalled and summarized. The paper also analyzed the limitation in resent research and forecasted the future research direction.
• Select
  Screening of Methods to Extract Total RNA from Micro-spore of Chinese Cabbage Suitable for Transcriptome Sequencing

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

  . 2014, 1(11): 15.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  In order to find out micro-spore extracting method suitable for transcriptome sequencing，this study took Chinese cabbage‘Jihong 82’as experimental material and micro-spore induced with heat shock as research object．This study compared and analyzed the RNA extraction effects by 3 different methods：TRIzol method，improved CTAB method and ultrapure kit method．The results showed that RNA concentrations extracted by TRIzol method and improved CTAB method were higher，but the RNA integrity was lower．Quality of RNA extracted by ultrapure kit method was the highest，and the RNA inegrity was also good．Therefore，RNA obtained by this method was suitable for satisfying the requirement of transcriptome sequencing．
• Select
  Effects of EMS Treatment on Germination and Biochemical Characteristics of Chinese Cabbage Seed

  LU 　Yin, LIU Meng-Yang, WANG Yan-Hua, LUO Shuang-Xia, XUAN Shu-Xin, ZHAO Jian-Jun, SHEN Shu-Xing

  . 2014, 1(11): 20.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  Taking Chinese cabbage‘Jinyu 80’and‘99-2’as experimental material，studied the effect of different EMS concentration treatments on seed germination，seedling growth，and major biochemical indexes of both seed and seedling．The results showed that within the scope of 0-1.0% concentration，the germination potential and germination rate of Chinese cabbage seeds were decreased，the seedling root tip and cotyledon edge gradually turned to brown．The seedling surviving rate was decreased gradually，and the conductivity value of seed leachate and MDA contents in seed and seedling were all increased gradually．The EMS effect on SOD and POD activities of seed and seedling were expressed as low concentration with promotion，and high concentration with inhibiton．The optimal EMS concentration for Chinese cabbage seed treatment was ranged from 0.4%-0.6%．
• Select
  Effect of Different Irrigation Pattern on Yield and Quality of Watermelon Grown in Greenhouse

  LI 　Yang, LI You-Li, TIAN Yong-Qiang, ZHANG Zhen-Xian, GAO Li-Hong

  . 2014, 1(11): 24.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  In order to explore the suitable cultivation and irrigation pattern for producing watermelon〔Citrullus lanatus（ Thunb.）Matsum. et Nakai〕with stable yield and superior quality in Northwest China greenhouse，this study took the local traditional irrigation experience as the contrast， and set up the following 2 treatments：T₁ controlling the various growth stages for the lower limit and the upper limit of soil relative moisture contents；T₂ controlling the upper limit of soil relative moisture content. These 2 treatments were used to study the responses of watermelon yield and quality to different irrigation patterns. The results showed that during stretch tendril and maturing periods， controlling the lower limit（70%， 65%） of soil relative moisture content could significantly improve water use efficiency whithout distinquishly reducing watermelon yield. By controlling the lower limit and the upper limit of soil relative moisture contents， the water use efficiency increased 21.85% than the contrast. At the same time， controlling soil relative moisture content could significantly improve the content of soluble sugar content， which was the major substance affecting watermelon flavor.
• Select
  Effects of Different Pollination Methods on Fruit Quality of Melon Cultured in Greenhouse

  FU Qiu-Shi, ZHANG Xin-Ying, ZHU Hui-Qin, WANG Huai-Song

  . 2014, 1(11): 31.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  The aim of this study was to explore the effects of 3 pollination methods-honeybee pollination，artificial pollination and forchlorfenuron treatment on melon（Cucumis melo L.）fruit quality. The results showed that honeybee pollination and forchlorfenuron treatment compared with artificial pollination could significantly improve the single fruit weight， increase fruit longitudinal and diameters， flesh thickness， and contents of glucose，fructose and sucrose in fruit. But the soluble sugar contents in seeds and thousand seeds weight of forchlorfenuron treatment were significantly lower than that of honeybee and artificial pollination. Forchlorfenuron treatment could also obviously lessen the species of aromatic substance and reduce the content of aromatic substance than honeybee and artificial pollinations. The residue quantity of forchlorfenuron 30 days after spraying was only 0.62 μg·kg^-1. It is in the range of security. Honeybee pollination could significantly improve fruit quality. Therefore， honeybee pollination is one of the important matching technologies， which can qurantee the safe， superior and efficient melon production in greenhouse.
• Select
  Effect of Four Fumigants on Soil Nitrification and Related Enzyme Activity

  MA Tao-Tao, YAN Dong-Dong, MAO Lian-Gang, WANG Qiu-Xia, LI Yuan, OUYang-Can-Bin

  . 2014, 1(11): 37.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  Taking soil which cucumber， tomato rotation for more than 3 years in Shunyj Djstrict of Beijing vegetable greenhouses as research object，and adopting the method of indoor constant temperature with aerated condition，this paper studied the effects of 4 fumigants Chloropicrin（Pic），1，3-Dichloropropene（1，3-D），methyl disulfide（DMDS）and methamsodium（MS）on soil nitrification and several related enzyme activities.
  The paper also conducted correlation analysis on certain targets， which might influence the contents of nitrate nitrogen in Pic treatment group. The results revealed that soil nitrate nitrogen concentration decreased significantly after all these 4 fumigantion treatments．Among them， the inhibition on soil nitrification by Pic，1，3-D and MS treatments could last for 28-56 days，while the DMDS treatment could only last about 7 days．All fumigation
  treatment showed different inhibition levels on soil glutamine enzyme and asparagine enzyme．Pic showed significant promoting effect on soil protease activity，while on the contrary MS showed strong inhebitory effect．The correlation coefficients between NO^₃--N and NH₄⁺-N，NO₃^--N and DON，NO₃^--N and DAA，NO₃^--N and SMBN were -0.977，0.887，-0.628 and -0.645， respectively and all of the correlation reached significant or very significant level．
• Select
  A New Bitter Gourd F₁ Hybrid—‘Guanchun No. 3’

  MIAO Ming-Jun, CHANG 　Wei, LI 　Zhi, WANG 　Pei, LI Yue-Jian

  . 2014, 1(11): 43.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Guanchun No. 3’ is a new bitter gourd F1 hybrid developed by crossing 327 as female parent and 63 as male parent. The plant has strong growth vigor. It is of early maturity. Both of its main and side vines can bear fruit. The first female flower sets on the 8-10 th node of its main vine. Its fruit is of long clavate shape， and is 28-35 cm in length，5-7 cm in diameter，1.0-1.2 cm in flesh thickness. The single fruit weight is 450-600 g. Its yield is 45.0-52.5 t·hm^-2.
  Its resistance to powdery mildew，phytophthora blight and Fusarium wilt is stronger than the contrasts‘ Lanshanchangbai’and‘ Chunqiuwang’. It is suitable to be cultivated in Sichuan，Hunan，Jiangxi Provinces.
• Select
  A New Cucumber F₁ Hybrid — ‘Jingyan 207’

  MAO Ai-Jun, WANG Yong-Jian, ZHANG Li-Rong, WEN Chang-Long

  . 2014, 1(11): 45.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Jingyan 207’is a newly bred cucumber F1 hybrid developed by crossing inbred line BC244856-9 as maternal parent and 54H56 as paternal parent. It has strong growth vigor and belongs to gynoecious type. It is of early maturity. The fruit is 33 cm in length and about 3 cm in diameter. The single fruit weight is 170-200 g. It has shiny green peel， small spines and warts. The fruit flesh is crisp and sweet with good guality. It can yield over 118.4 t·hm^-2. It is resistant to downy mildew， powder mildew， and CMV，tolerent to low temperature and weak light. It is suitable for greenhouse cultivation in spring， plastic tunnel cultivation in spring and autumn in China.
• Select
  A New Watermelon Variety Suitable for Inter-cropping — ‘Xinggui No.1’

  HUANG Jin-Yan, LI 　Zhi, LI Wen-Xin, HE 　Yi, HONG Ri-Xin, QIN Si-Hua, LI Tian-Yan-　

  . 2014, 1(11): 47.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Xinggui No.1’ is a new watermelon F₁ hybrid suitable for sole cropping or inter-cropping with sugercane， cassava or young fruit tree. Its fruit is of short and oval shape with deep green peel and dark green stripes. The single fruit weight is 4.0-7.0 kg. The peel is tough and never dehiscent. It is 1.0-1.2 cm in thickness，The fruit is tolerant to storage and transportation. Its flesh is red with over 11.0% sugar content，sweet flavor and fine texture.‘ Xinggui No.1’ has strong growth vigor and is resistant to stress and disease. It can easily set fruit．Its fruit has high commodity rate. The total growing period is 110-120 days in spring and about 90 days in autumn. The fruit development period is 35-38 days. The yield of sole cropping and inter-cropping is 37.5-52.5 t·hm^-2 and
  30.0-36.0 t·hm^-2， respectively. It is suitable to be cultivated in various regions of Guangxi both for sole cropping and inter-cropping.
• Select
  A New Yellow Flesh Seedless Watermelon Variety— ‘Kuijing’

  YU Yu-Hong, TAN Hui-Ming, DU Xiao-Li, LI 　Chao, SUN Tie-Liang

  . 2014, 1(11): 50.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Kuijing’ is a new seedless watermelon hybrid variety developed by crossing inbred line Ks-4N as female parent and HA-6 as male parent. It is of mid-maturity. The total growing period is about 105 days and the fruit matures 33 days after pollination. The fruit is of round shape with black peel. The fruit has beautiful appearance. The single fruit weight is 6-8 kg. The peel thickness is about 1.3 cm. The flesh is crystal yellow bicolored and crispy with good taste. The soluble solid content in central part is 11.0% and 10.5% in edge. It can normally yield 45.0-52.5 t·hm^-2. It is suitable for greenhouse and open field cultivation.
• Select
  A New Melon F₁ Hybrid—‘Yongtian No. 8’

  ZANG Quan-Yu, MA 二Lei, WANG Yu-Hong, DING Wei-Hong, HUANG Yun-Ping

  . 2014, 1(11): 53.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Yongtan No. 8’ is a F₁ hybrid melon derived from a cross between inbred line BZ-15-9-7-5-3-1 as female parent and inbred line BH-6-12-9-4-3-1 as male parent. Its fruit is of pear shape. The average single fruit weight is about 0.45 kg. The fruit rind and flesh are all white in color. The brix in fruit central part is about 13%. It is crisp with high edible quality， sweet taste and fuller aroma. In spring its fruit development period is about 30 days. The total development period is 95-110 days.‘ Yongtian No.8’ is tolerant to low temperature. It has stronger resistance to gummy stem blight，downy mildew and powdery mildew than‘Xiaobaigua’. It is suitable for facility cultivation in spring in east China areas. Its yield is about 37.5 t·hm^-2.
• Select
  A New Chinese Cabbage F₁ Hybrid—‘Weibai 70’

  HAN Tai-Li, TAN Jin-Xia, XU Li-Gong, YANG Xiao-Dong, ZHANG 　Lin, SONG Yin-Xing, CHEN 　Xia

  . 2014, 1(11): 55.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Weibai 70’ is a Chinese cabbage F1 hybrid bred by crossing self-incompatible line BZ03-27 as female parent and BZ03-16 as male parent. It can be harvested in 70 days after sowing. The plant is 38 cm in height and 40 cm in width. Its leaf is light green in color， flat without sting and the petiole is white. The head is of high and straight canister type， 38 cm in height and 16 cm in diameter. The inside leaf in its head is light yellow in color. The average single head weight is 2.4 kg and the ratio of net product is 64.6%. The soft leaf rate is 45.6%. It is suitable for ridge cultivation in open field in late July with the density of per hectare 34.5-37.5 plants. Its yield is about 75 t·hm^-2.
• Select
  A New Hot Pepper F₁ Hybrid — ‘Xiangla No.14’

  MIAO 　Wu, LIU Zhi-Min, LIU Rong-Yun, LI 　Man, DU Pei-Fen

  . 2014, 1(11): 58.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Xiangla No.14’ is a new hot pepper F1 hybrid developed by crossing R07344AB as female parent and 7163 as male parent. It is of medium maturity. It can yield high and has super quality. This variety belongs to line pepper type. The plant has strong growth vigor. Its fruit sets concentrately. Its yield is about 10% higher than‘Xiangla No.4’. It is resistant to anthracnose，blight， and virus disease similarly to‘ Xiangla No.4’. Its fruit has good commercial characteristics. It can yield about 36 t·hm^-2. It is suitable for open field cultivation.
• Select
  A New Sweet Pepper F₁ Hybrid —‘Jingtian No. 1’

  CHEN 　Bin, ZHANG Xiao-Fen, GENG San-Sheng

  . 2014, 1(11): 60.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Jingtian No. 1 ’is a new sweet pepper F1 hybrid developed by crossing inbred line 04-220 as female parent and 04-114 as male parent. It is of mid-early maturity. The first floral bud sets on 9-10 node. The fruit is of long conical shape with thick flesh. The unripen fruit has green peel and the matured fruit has red peel.The fruit is about 14.5 cm in length， 6.0 cm in diameter， and 0.45 cm in flesh thickness. The single fruit weight is 100-130 g. It is tolerant to storage and transportation. It has good commodity character. The variety is tolerant to low temperature， and resistant to TMV and medium resistant to CMV. It can be used for dehydration processing. Its average yield is about 45 t·hm^-2. It is suitable for cultivation in open and protected fields in Yunnan， Sichuan and Guizhou， etc. southwest China areas.