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15 March 2014, Volume 1 Issue 3
    

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  • Research Progress on Genetic Breeding of Spinach（Spinacia oleracea L.）
    QIAN Wei, ZHANG He-Long, LIU Wei, XU Zhao-Sheng
    . 2014, 1(3): 5-13.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    Spinach（Spinacia oleracea L.）with rich nutrition，strong cold resistance，short production
    cycle and high multiple crop index is widely cultivated throughout northern and southern China．It is one of the
    major green leafy vegetables in spring，autumn and winter，and also one of the major export vegetable species
    in China．Along with the improvement of people’s living standard，higher requirement for strain characters of
    spinach is raised，and selection for superior spinach varieties has won the great attention of breeders．This paper
    reviews the research progress made in genetic breeding of spinach，including spinach germplasm collection and
    identification，inheritance regularity of characters，breeding technology and new varieties selective breeding．It also
    points out the existing problems facing spinach breeding in China，and prospects the future developing trends．
  • Effect of Chlorophyllin-iron on Osmoregulation Substance and Activities of
    Antioxidant Enzymes of Cucumber Seedling under Nitrate Stress
    ZHANG Meng, WANG Xiu-Feng, WEI 　Min, 　Yang-Feng-Juan , 　Shi-Qing-Hua , 　Li-Yan
    . 2014, 1(3): 14-18.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    chlorophyllin-iron solution at cucumber（ Cucumis sativus L.）seedling leaves on the plant growth，contents of
    proline，soluble sugar，MDA and activity of peroxidase under nitrate stress. The results showed that exogenous
    spraying chlorophyllin-iron solution at leaves could relieve the inhibition of nitrate on cucumber seedling growth，
    decrease the contents of proline，soluble sugar，MDA，and increase the activities of SOD，POD，CAT and
    APX. Eexogenous spraying chlorophyllin-iron could to certain extent reduce the accumulation of active oxygen
    in leaves under nitrate stress， restrain lipid peroxidation，and therefore relieve the damage of nitrate stress on
    cucumber seedlings.
  • Effects of Different Nitrogen Forms on Soil Microorganism Population and Soil
    Enzyme Activities around Cucumber Root Zone
    ZHANG Xue, LIU Shou-Wei, WU Feng-Zhi, ZHOU Xin-Gang
    . 2014, 1(3): 19-25.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    In this paper，seedling pot cultivation experiments were conducted to study the effects of different nitrogen form match on microorganism population and soil enzyme activity in cucumber seedling root zone. This study includes 4 nitrogen form matching treatments as N1（NH4+-N∶NO3--N were 10∶0），N2（NH4+-N∶NO3--N were 7∶3），N3（ NH4+-N∶NO3--N were 5∶5），N4（NH4+-N∶NO3--N were 3∶7）. The same volumes of water were added as the control. The results showed that cucumber seedling dry weight and fresh weight of the N treatments were both higher than the CK，especially the N3 treatment was obviously higher than that of N1，N2 treatments and the CK. The microorganism population of N3 and N4 treatments was higher，among which the population of bacteria and actinomyces were higher than that of N1 treatment and the CK，while the fungus amount was lower than that of all other treatments. N2 treatment had the highest activities of soil urease and neutral phosphatase. N3 treatment had significantly higher soil dehydrogenase activity than the other treatments. In all
    treatments the catalase activity was significantly lower than that of the CK. Thus，the conclution: applying nitrogen fertilizer could increase cucumber dry weight，fresh weight，microorganism population and enhance the enzyme activity. Increasing the ratio of nitrate nitrogen could increase cucumber dry weight，fresh weight，soil bacteria and actinomyces population，and also enhance the soil dehydrogenase activity. While increasing the ratio of
    ammonium nitrogen could increase soil fungi amount，and enhance activities of urease and neutral phosphatase. Comprehensive evaluation showed that N3 treatment had the best result in greenhouse cucumber cultivation，i.e. the ratio of NH4+-N∶NO3--N is 5∶5 .
  • Effect of Nano-devices on Lettuce Growth and Quality
    LI Gui-Lian-.Chen-Ri-Yuan-.Liu-Hou-Cheng-.Song-Shi-Wei, SUN Guang-Wen
    . 2014, 1(3): 26.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    Lettuce（Lactuca sativa L. ） was used as material for investigating the effects of different
    treatment times（0 h，2 h，8 h，24 h）of nano-devices on growth and quality．The results indicated that the
    shoot fresh weight and dry weight of T3 treatment（24 h）were increased by 14.57% and 22.48%，respectively，
    but T1 treatment（2 h）and T2 treatment（8 h）treatments had no significant effects．Compared with the
    control，there were no significant differences on stem width and root and shoot ratio between 3 treatments．But
    in treatment T3，the leaf blade numbers were increased significantly，the contents of soluble sugar and flavonoid
    of lettuce were increased，the content of soluble protein decreased slightly．The contents of nitrate decreased
    obviously with the increase of treatment time. The decreasing ampitude is 2.05%-62.14%．Under this experiment
    conditions，the 24 h treatment time of nano-devices has the best effect for improving lettuce growth and quality．
  • Studies on Allelopathic Effect of Cinnamic Acid on Tomato
    WANG Ru-Hua, QU Guang-Feng, ZHANG Qi-Fa, LI Dan-Dan, LIU Fang, QIN Zhen-Hua
    . 2014, 1(3): 29.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    The effect of cinnamic acid on tomato（ Lycopersicon esculentum Mill.）seed germination，
    seedling growth and physiological characteristics was studied by soaking seed and root-irrigation methods. The
    results showed that different cinnamic acid concentrations inhibited the tomato seed germination and seedling
    growth in different degrees. The inhibition effect of low cinnamic acid concentration was weak，while its impacting
    effect was strong，especially with 4.0 mmol·L-1 concentration treatment. The allelopathic effect of cinnamic acid
    on tomato germination was obvious larger than on seedling growth. At the same time，cinnamic acid had negative
    impact on physiological activities of tomato seedlings，especially the 4.0 mmol·L-1 concentration treatment
    increased significantly the soluble sugar content in tomato leaf blades，and reduced the root activity of tomato
    seedlings.
  • Effects of Silicon in Nutrient Solution on Garlic Growth and Its Physiological
    Characteristics
    LIU Jing-Kai, LIU Shi-Qi, LIAN Hai-Feng, CHENG Bo, YU Xin-Hui
    . 2014, 1(3): 33.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    'Jinxiangbaipisuan’ was taken as experiment material investigate the effects of silicon on root
    growth，photosynthetic characteristics and yield of hydroponics cultured garlic（Allium sativum L.）. Five
    different silicon levels（ 0，0.75，1.50，2.25，3.00 mmol·L-1） were designed. The results showed that the root
    system growth，fresh weights of garlic plant，bolt and bulb，and root system activity all rose with the increase of
    silicon concentration from 0 to 1.50 mmol·L-1，but fell while the silicon content reached 1.50 mmol·L-1. At the
    same time，the pigment content，net photosynthetic rate and stomatal conductance of leaves also increased first
    and then decreased with the increase of silicon content from 0 to 3.00 mmol·L-1．They reached the highest when
    silicon concentration was 1.50 mmol·L-1. While the change trend of transpiration was just the opposite. It reached
    the minimum value at Si 1.50 mmol·L-1 and was reduced by 17.78% compared with the treatment without silicon.
  • Screening of High Pathogenic Entomopathogenic to Tobacco Whitefly，Bemisia
    tabaci    （Gennadius）
    LIU Zhao, LEI Zhong-Ren
    . 2014, 1(3): 37-40.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    To screen high pathogenicity entomopathogenic fungi against the tobacco whitefly，Bemisia tabaci（
    Gennadius），the virulence of seven isolates of Beauveria bassiana，three isolates of Metarhizium anisopliae，and
    one isolate of Paecilomyces fumosorseus were identified in this study．The results showed that Canada No.1（B．bassiana）
    was the most virulent isolate against B．tabaci．The pathogenicity of Canada No.1 to egg and nymph stages
    of B．tabaci were also investigated．Results showed that Canada No.1 had no virulence to the eggs，but had high
    virulence to the 2nd，3rd and 4th nymph，and the virulence was decreased with the increase of nymph age．
  • Correlation and Path Analysis of Main Agronomic Characters and Yield of Seed
    Lotus
    ZHU Hong-Lian, KE Wei-Dong, LIU Yu-Ping, PENG Jing, HUANG Lai-Chun, ZHOU Kai
    . 2014, 1(3): 41.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    Correlation and path analysis was carried on the main agronomic characters and yield of seven
    seed lotus（Nelumbo nucifera Gaertn） cultivars. The results showed that the degree of correlation between eleven
    major characters and yield was：receptacle number＞receptacle diameter＞single fresh seed weight＞single fresh
    receptacle weight＞average carpel number＞fresh seed width＞seed setting rate＞petiole diameter＞fresh seed
    length＞leaf long radius＞petiole height. Among them，receptacle number，receptacle diameter and single fresh
    seed weight were significant or very significant positive correlation with seed lotus yield. Based on the path analysis
    results，receptacle number，single fresh receptacle weight，seed setting rate and average carpel number had
    direct effect on seed lotus yield. The receptacle diameter，fresh seed length，fresh seed width，petiole diameter
    had indirect effect on yield. Other characters like petiole height，leaf long radius and single fresh seed weight had
    both direct and indirect effects on seed lotus yield. Based on the above analysis，the principle breeding objectives
    were to improve the receptacle numbers，single fresh receptacle weight，average carpel number and seed setting
    rate per unite area. And the secondary objectives were increasing the receptacle diameter，single fresh seed weight
    and well coordinating the relationship between them.
  • A New Welsh Onion Variety—‘Zhengyanhancong’
    TIAN Chao-Hui, GUO Jing, LI Jian-Xin, SONG Xiao-Nan
    . 2014, 1(3): 46-48.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    Zhengyanhancong’ is a new welsh onion variety，which is bred by cross breeding，individual
    plant selection and systematic selection. The plant is 95-120 cm in height with 40-50 cm scallion stalk and 2-3 cm
    trans diameter. It has 5-7 functional leave blades. Its leaves are dark green in color with many lardaceous power.
    The single plant weight is 0.25-0.65 kg. Its yield is over 78 t·hm-2. It has strong cold resistance. It has stronger
    resistance to Alternaria leaf spot，downy mildew and rust than the control‘ Zhangqiudacong’. It is also resistant
    to lodging. The scallion stalk is dense with strong hot and fragrance flavour. It has good quality and long shelf life. It
    is tolerant to storage. It is suitable to be cultivated in central China plains，western and northern China.
  • A New Cherry Tomato Variety with Resistance to TYLCV —‘Jinglingxiuyu’
    ZHAO Tong-Min, ZHAO Li-Ping, YANG Ma-Li, YU Wen-Gui, WANG Yin-Lei
    . 2014, 1(3): 49-51.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    Jinglingxiuyu’ is a new cherry tomato hybrid developed by crossing JS-CT-9210 as female parent
    and JSTY-CT-610 as male parent．It is of early middle maturity and indeterminate growth type. It grows vigorously．
    The fruit is of oval shape．It is tolerant to storage and transportation. The young fruit has green shoulder，
    and the matured fruit is pink in color．The average single fruit weight is about 20 g．The fruits have equal size and
    good quality. The results of field investigation show that it is resistant to TYLCV. Its resistances to wilt is stronger
    than that of the contrast‘ Sutian No.2’ and‘ Shengnyu’．Its average yield is about 75 t·hm-2．It is suitable for
    cultivation in areas suffering seriously from TYLCV.
  • A New Sweetpotato Variety —‘Zheshu 259’
    LI Bing, WU Lie-Hong, SHEN Sheng-Fa, WANG Dong-Fang
    . 2014, 1(3): 52-54.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    ‘ Zheshu 259’is a new sweetpotato variety derived from female parent‘ Zheshu 81’（Zhe 73
    ban 2×Hua G-2）through open-pollination. Its tuber is of long spindly shape with red skin and pale orange flesh.
    The average dry matter content is 25.45%. The yield of fresh root can reach about 40.5 t·hm-2. It is good for fresh
    food and as processing material. It is suitable to be cultivated in the regions of Zhejiang，the south of Jiangsu，
    Jiangxi，Sichuan，Chongqing，Hunan，Hubei.
  • A New Potato Variety — ‘Tianshu No. 12’
    LYU Tai , HE Er-Liang, GUO Tian-Shun, WANG Peng, XIE Wei-Qing, LI Fang-Di, QI Xiao-Dong
    . 2014, 1(3): 55.
    Abstract ( ) Download PDF ( )   Knowledge map   Save
    Tianshu No.12’ is a new potato variety developed by crossing Tian97-8-98 as female parent with
    ‘Zhuangshu No.3’ as male parent．It is of late maturity. Its total growing period is about 126 day. The tuber is of
    elliptic shape with light yellow peel，yellow flesh and shallow eyes．The variety can produce 4.1 tubers per plant.
    The average single tuber weight is 105 g．The large and middle tuber weight percentage reaches 87.4%．Its yield
    is over 22.5 t·hm-2. It is suitable to be grown in Tianshui，Linxia，Dingxi，Pingliang，Longnan，etc. in Gansu
    Province.
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