01 July 2015, Volume 1 Issue 7

    

• Select all
  |

• Select
  Potential Analysis on High Efficient Utilization of Waste Vegetable Resources in China

  DU Peng-Xiang, HAN , XUE , GAO Jie-Yun, CHEN 　Qing, LI Yan-Ming

  . 2015, 1(7): 15.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  At present it is an urgent task to realize the safe treatment and resource utilization of vegetable waste．This paper analyzes comprehensively the source utilization of vegetable waste from the following aspects：the source of vegetable waste，existing situation，merit and demerit of major treatments，microbial degradation of vegetable waste．Before ending，the paper suggests that composting is the most effective way to achieve fast
  resource utilization of vegetable waste in China．The paper also prospects the development of resource utilization of vegetable waste.
• Select
  Correlation Analysis of Primary Umbel and Seed Umbel Characters in Carrot

  SONG Hong-Xia, CAO Jing-Jing, WANG Rui-Li, ZHANG Guang-Xing-*

  . 2015, 1(7): 21.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  To clear the genetic pattern of primary umbel types in carrot（Daucus carota L. var. sativa DC.），the umbel type，morphology characteristics and corresponding seed umbel type，seed yield and quality trait of 7 conventional carrot varieties were investigated and analyzed. The results showed that bell umbels accounted for the most，semi-bell was second，and flat umbels took minimum percentage during flowering in these 7 carrot varieties. Total floret number and umbels area of bell type were significantly higher than that of other types. After pollination，bell umbels formed flat seed umbels mostly，while those with flat shape flowers produced mostly closed type of seed umbels. Semi-bell shape always formed flat type and cup type seed umbels. Comparing yield and quality of these 3 types of seed umbels，various indexes of flat type were better than the closed type and cup type. The yield of single flat type seed umbels was the highest，its seed size was the biggest and full，germination percentage and germination energy were maximum，and its EC was minimum.
• Select
  Initial Identification and Sequence Analysis of Melon yellow spot virus on Cucumber in Shouguang Isolates

  QIAO 　Ning, WANG Xing-Cui, TIAN Su-Bo, LIU Yong-Guang, JIANG Hui-Xia, LI Mei-Qin, ZHU Xiao-Ping

  . 2015, 1(7): 25.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  Cucumber leaves infected possibly by Melon yellow spot virus（MYSV） were collected from Shouguang， Shandong Province. These samples were detected by RT-PCR. The amplified products were connected to pEASY -T1 Simple cloning vector and then sequencing was conducted. The results showed that the size of target fragment was 505 bp， which was consistent with the expected  result. And homology analysis revealed that
  the MYSV infected cucumber in Shouguang had closer genetic relationship with MYSV-Sanya isolates（ melon -GQ397254） from Sanya，China and MYSV-TW isolates（ watermelon -FJ386391） from Taiwan， China. Their homology could reach 98%.
• Select
  Identification of Phytotoxicity and Laccase Properties of Extracellular Macromolecule Substance from Botrytis cinerea

  CHEN 　Qian, ZHANG Guo-Bin, SHI 　Min, ZHANG Zhao-Li, YAN 　Bo, YANG Hong-Yu

  . 2015, 1(7): 29.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  The macromolecular substances larger than 14 kD in weight， secreted by Botryis cinerea were extracted with dialysis method. These substances were directly inoculated into the leaf blades of tomato and chrysanthemum to detect their phytotoxicity. And the laccase property of these Botryis cinerea secreta was identified using tannic acid and RB light blue as the indicator. The results showed that the extracellular macromolecule substances secreted by B. cinerea could lead to leaf tissue necrosis， suggesting that they were toxic to the plants. The results also showed that 3 days after inoculation of B. cinerea， there appeared chromogenic reaction on tannic acid and RB light blue plate. And 6 days later， the plate’s color changed almost completely，indicating that the extracellular macromolecule substance had the properties of laccase.
• Select
  Effect of Different Fertilization on Ammonia-oxidizing bacteria and Ammoniaoxidizing archaea in Red Soil Vegetable Field

  ZHOU Zhi-Cheng, LUO 　Kui, TANG Qian-Jun, RONG Xiang-Min, LIU 　Qiang, HE Fei-Fei

  . 2015, 1(7): 33.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  Adopting amoA gene clone library construction method，this paper studied the diversity of ammonia-oxidizing bacteria（AOB） and ammonia-oxidizing archaea（ AOA）and correlations between diversity index and urease activity in red soil vegetable field by different fertilization including decomposed organic fertilizer （DNPK），fresh organic fertilizer（FNPK），Nitrogen，Phosphorus and Potassium chemical fertilizer（NPK），Phosphorus and Potassium chemical fertilizer（PK）．The results showed that OTU quantity，Shannon index of AOB library and AOA library represented organic fertilizer（ DNPK and FNPK） were higher than that in chemical fertilizer soil（ NPK and PK）．The dominant AOB groups in FNPK and DNPK treated soil were Nitrosolobus multiformis，which represented 88.5% and 68.5%，respectively．The main AOB groups in chemical fertilizer soil（ NPK and PK） were Nitrosospira sp．with proportion of 54.8% and 65.5%，respectively．The main AOA groups in red earths were Candidatus Nitrosotalea devanaterra，which occupied 90.9% in DNPK treated soil，84.4% in FNPK treated soil，77.8% in NPK treated soil，and 45.2% in PK treated soil．The urease activity
  and diversity index in soils treated by DNPK and FNPK were higher than that treated by NPK and PK．There was positive correlation between diversity index of AOA community and urease activity，but there was no marked positive correlation between diversity index of AOB community and urease activity．In conclusion，organic fertilizer was more able to improve the diversity of AOB and AOA communities in red soil of vegetable field than
  chemical fertilizer．AOA community played more important role in the process of ammoxidation in red soil of  vegetable field．
• Select
  Preliminary Report about Using 4 Chemical Inducers to Control Cucumber green mottle mosaic virus Disease

  LI Jun-Xiang-　, GU Qin-Sheng-*

  . 2015, 1(7): 40.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  In order to screen the chemicals，which could induce resistance to CGMMV in bottle gourd 〔Lagenaria siceraria（ Molina） Standl.〕，2,1,3-Benzothiodiazole（ BTH），Brassinolide（ BL），Chitosan Oligosaccharide（ CTS） and Salicylic Acid（ SA），were applied to bottle gourd seedlings to test their induced resistance in this experiment. BTH，BL，CTS and SA were sprayed before the plants were inoculated with CGMMV.
  Their relative control effects were evaluated.The results showed that 3 days before innoculation，treatments with BTH（ 0.050 g·L^-1），BL（ 5.0×10^-5 g·L^-1），CTS（1.0 g·L^-1），SA（ 0.138 g·L^-1 ） could significantly reduce the disease indexes. Among them，5.0×10-5 g · L^-1had the best control effect，reaching 70.38%. Further studies indicated that after spraying BL，CTS，SA，3 days was the optimum inducing time，while after spraying BTH，
  the optimum inducing time was 1 day.Those 4 chemicals all showed potentials in inducing bottle gourd to produce resistance to CGMMV. Their differences in resistance were related with inducers and inducing times.
• Select
  Studies onBradysia odoriphaga Laying Eggs in Different Hosts and Its Phototaxis to LED

  YANG Feng-Shan, XU Zhen-Hua, LU Hong-Gang, 　Li-　Chao , 　Liu-Chun-Guang

  . 2015, 1(7): 45.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  In order to achieve capture of live insects， predict occurrence law of field populations， and understand the occurrence dynamic of resistance in field populations， we tested the fecundity and phototaxis of Bradysia odoriphaga  on 4 families 9 kinds different hosts and 6 different single color LED lights， and then achieved the best hosts and light source. Meanwhile， the efficient capture technology of live insects was obtained by preparing and field applying the collection cage of Bradysia odoriphaga . The results showed that the highest egg laying amount of Bradysia odoriphaga was gained in Solanum tuberosum with 93.56 eggs， accounting for 45.27% of the total spawning. The largest attracting amount was acquired in green light with 26.75 eggs， accounting for 40.38% of all the attracting amount of Bradysia odoriphaga. In field application， the numbers of insects caught were 700-800 in open field， 300-400 under shed， 100-200 in greenhouse， respectively. Therefore， the capture of live insects was achieved and the existing technology for capturing insects was improved. Thus， a foundation for studying relative relation of Bradysia odoriphaga  at different regions was established.
• Select
  Studies on Quickly Testing Pakchoi Seed Vigor by Resazurin Reagent

  LIU Chun-Xiang, 　Li-Yuan-Yuan , 　Wang-　Meng , 　Hu-　Pan

  . 2015, 1(7): 49.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  In order to explore simple，rapid and nondestructive method for testing pakchoi〔Brassica campestris L. ssp. chinensis（L.）Makino var.communis Tsen et Lee〕seed vigor，‘Suzhouqing’and‘Shangha iqing’were used as experimental materials under 44 ℃ condition they underwent aging treatment for 0，2，4，6 days to test their seed vigor index and color change of resazurin reagent，absorbancy，and then correlation analysis was conducted．The result showed that the variation trend of these two pakchoi varieties were the same，their germination rate，germination index and vigor index were all dramatically declined along with the increase of aging degree．The color of resazurin reagent was changed from blue to pink then to colorless．The absorbance declined sharply．The seed germination rate，the absorbancy of resazurin reagent，blue hole rate were significantly positive correlated．The correlation coefficients were over 0.96．The seed vigor index，germination index and absorbancy of resazurin reagent were significantly or highly significantly positive correlated．
• Select
  Response of Chinese Cabbage Seedling’s Root Morphology with Different Tolerance to Potassium Deficiency

  LI Hai-Yun, 　Si-Dong-Xia , 　吕Fu-Tang , 　Zhang-Fu-Jun

  . 2015, 1(7): 53.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  Taking Chinese cabbage〔 Brassica campestris L. ssp. pekinensis（Lour）Olsson〕cultivars‘Defeng No.1’（tolerance to low potassium）and‘Fengkang 70’（sensitive to low potassium）as experimental material，studies the response made by dry matter accumulation during seedling stage and root system parameter of Chinese cabbage with different tolerance to potassium deficiency through hydroponics experiment．The results showed that under potassium deficiency（0.3 mmol·L^-1），the root dry weight，plant dry weight，and root to shoot ratio in‘Fengkang 70’declined significantly，while there were no marked changes in‘Defeng No.1’．On the other hand，the length and surface area of thin roots（Φ ≤ 0.2 mm）and the proportion between thin root surface area and total root system surface area were significantly increased in‘Defeng No.1’，while there were no changes detected in‘Fengkang 70’．All these results indicated that under low potassium stress，the increase of thin root length and surface area of Chinese cabbage cultivar with low potassium tolerance might increase the propotion of thin root length and its surface area，thus strengthen its tolerance to potassium deficiency．
• Select
  A New Mini Chinese Cabbage F₁ Hybrid —‘Jingchunwa No. 3’

  YU Yang-Jun, 　Zhang-Feng-Lan , ZHANG De-Shuang, ZHAO Xiu-Yun, YU Shuan-Cang, XU Jia-Bing, WANG Wei-Hong, SU Tong-Bing

  . 2015, 1(7): 58.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Jingchunwa No. 3’ is a new mini Chinese cabbage hybrid bred by crossing cytoplasmic male sterile line CMS10152 with self imcompatible line 09219. It has flat-topped head and deep yellow inner leaves. It takes about 55 days from transplanting to harvest. It is of small plant type. The plant is erect with dark green outer leaf. Its head shape is cylindrical and flat-topped with 21.9 cm of head height and 10.2 cm of head diameter. Its inner leaves are deep yellow in color. Its single head weight is 0.7 kg. The yield in open field is about 90-105 t·hm^-2.It is resistant to virus，downy mildew and black rot. Its tolerance to late bolting is strong. Its quality is good. It fits to transplant in high density of 10 000-12 000 plants per 667 m². It has been extended to Beijing， and Hebei， Gansu，Yunnan，Hubei Provinces.
• Select
  A New Pakchoi F1 Hybrid—‘Hualyu No.4’

  SONG Ju-Hong, YUE Cun-Qi, 　Zhang-Guo-Cong , 　Zhang-　Chao

  . 2015, 1(7): 61.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Hualyu No.4’ is a high quality pakchoi F1 hybrid developed by crossing W-1-8-1 as female parent and S-1-2-9 as male parent. The plant is rather erect， 21 cm in height and 29 cm in width. Its leaf is flat and dark green in color. The petiole is green and 5.3 cm in width，1.4 cm in thickness. The single plant weight is 260 g. It has crisp quality and tastes rich with less fiber. It can yield over 42 t ·hm^-2 in summer and autumn cultivation. Its resistances to virus disease， downy mildew and soft rot are stronger than that of the check‘ Jingguan No.1’ . It has good tolerance to heat. It is suitable for summer and autumn cultivation in northern China.
• Select
  A New Hot Pepper F₁ Hybrid —‘Tianjiao No.10’

  CHENG Feng-Lin, 　Yin-Yan-Lan , 　Liang-Geng-Sheng , 　Zhang-Zhong-Ping

  . 2015, 1(7): 63.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Tianjiao No.10’ is a new mid-early maturing hot pepper F₁ hybrid developed by crossing clampepper inbred 114 as female parent and clam pepper inbred 67 as male parent. The plant has medium growth vigor，and is 83.72 cm in hight and 73.29 cm in width．The single plant can bear 23.5 fruits. The first flower sets at the 7.95 th node．Its fruit is of large claw shape with smooth surface．Its fruit is 28.68 cm in length and 3.14 cm in diameter. The flesh thickness is 0.332 cm . The single fruit weight is 59.25 g．It tastes medium hot and has good commercial character. It is tolerant to low temperature and scant sunlight. It can yield over 60 t·hm^-2. It is suitable for cultivation both in open and protected fields in Tianshui of Gansu.
• Select
  A New Pumpkin F₁ Hybrid—‘Milong’

  MA Hai-Long, 　Yue-　Qing , 　Zhi-Hai-Ying , 　Miao-Ru-Yi

  . 2015, 1(7): 66.

  Abstract ( ) Download PDF ( )   Knowledge map   Save

  ‘Milong’ is a early-maturing pumpkin F1 hybrid developed by crossing inbred line DP1-121（Cucurbita maxima Duch.）as female parent and XT-221（C. moschata Duch.）as male parent. The first female flower sets at about the 6th node. It takes 49 days from flowering to harvest. The fruit is blackish green in color，and of oblate shape with shallow ditch. The fruit pulp is thick，and yellow in color. It tastes sweet，floury，and
  delicate with good flavor. It is tolerant to storage and transportation. The single fruit weight is about 3.0 kg. It yields
  67.5 t · hm-2. It is suitable for cultivation in open fields in spring.