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Current Issue
2015 Vol.1 Issue.3,
Published 2015-03-01
1
GENG San-Sheng, CHEN Bin, ZHANG Xiao-Fen, DU He-Shan
2015 Vol. 1 (3): 1- [
Abstract
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393
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5
YIN Xue-Yun, ZHANG Guo-Sen, JIANG Hong, CUI Hai-Cheng, GE Liang, MAO De-Xin
2015 Vol. 1 (3): 5- [
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429
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572
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8
YAN Hui-Ping
2015 Vol. 1 (3): 8- [
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325
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689
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10
Survey on Production Status and Economic Analysis of Protected Tomato in the Pan Yangtze River Triangle Area
CHEN Jie, LI Ji, ZHANG Lu, LOU Qun-Feng, QIAN Chun-Tao, MA Hua, CHEN Jin-Feng
Safe and balanced supply of vegetables is very important for social stable， healthy economical developmentin Yangtze river triangle area. The field investigation on protected cultivated tomato in different cities of the pan Yangtze river triangle was conducted. Comparison analysis of the prices of tomato throughout the years under different growing conditions， microclimate and seasons， we found the benefits of tomato production can be influenced by market and climate. The winter tomato could earn the most high and stable benefits. The following were the spring and summer tomato，and the lowest benefits was earned in autumn tomato. We speculated that the effect on benefit of tomato production was induced by the transportation costs in different seasons because of the long cold-chain in Yangtze river triangle area. In addition， the low level of mechanization， high labor costs， uneven production technology and integrated pest management inhibited the high efficiency and high benefits production of tomato in this area.
2015 Vol. 1 (3): 10- [
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442
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17
Preliminary Studies on Identification Method for Cucumber Tolerance to Low Temperature
WANG Hong-Fei, LI Xi-Xiang, WANG Hai-Ping, SONG Jiang-Ping, QIU Yang, ZHANG Xiao-Hui, SHEN Di
In this study，methods for identifying cucumber germplasm tolerance to low temperature at germination and seedling stages were compared systematically. First， the cold tolerance of 15 materials were identified under 13 ℃ and 15 ℃（CK：26 ℃），respectively using 6 indexes including germination percentage， germination power，germination index，radicle length， fresh weight and dry weight of seed buds. The results showed that 13℃ was suitable for screening materials with strong tolerance to low temperature，while 15 ℃ was suitable for evaluating cold tolerance of cucumber germplasm resources at budding stage. In addition， different treatments with stress duration under low temperature at the seedling stage were analyzed and compared taking injury index and recovery index as evaluation indexes. Treating cucumber seedlings under 6 ℃ constant low temperature， we found that 3-5 days were the suitable treatment of stressed time. While under 15℃ /5℃ variable temperature conditions， we found the suitable treatment of stressed time was 9-15 days. Taking recovery index as evaluation index to identify seedling tolerance to low temperature， we found that the days under stress condition could be 1-2 days shorter than that taking injury index as evaluation index.
2015 Vol. 1 (3): 17- [
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489
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25
Analysis of Genetic Diversity and Relationship in Purple Lettuce by TRAP Technique
WANG Ya-Nan, HAN Ying-Yan, FAN Shuang-Xi, BU Bin
TRAP technique was used to analyze the genetic diversity and relationship of 47 purple lettuce （
Lactuca sativa
L. ） species．20 pairs of TRAP primers amplified polymorphic bands were 430，and the polymorphic rate was 67.08%．The genetic similarity coefficient was 0.706 3-0.982 8．The average Nei’s gene diversity index and Shannon’s information index were 0.255 3 and 0.397 6，respectively，indicating that the low degree of genetic diversity in purple lettuce．The cluster analysis divided these 47 species into 2 major groups， and the Ⅱ group could be devided into 5 subgroups．The species with similar leaf morphology were clustered together，they had closer genetic relationship．
2015 Vol. 1 (3): 25- [
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388
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33
Effects of Black Mulch on Seedling Growth of Seeds Existing in the Soil and Parent Seeds for Chinese Cabbage Vegetables
ZHANG De-Shuang- Zhang-Feng-Lan- Yu-Yang-Jun- Zhao-Xiu-Yun- Yu-Shuan-Cang- Wang-Wei-Hong- Su-Tong-Bing- Lu-Gui-Xiang
The unfavorable influence of seeds existing in the soil on the purity of commercial seeds production of Chinese cabbage vegetables becomes more and more obvious．So it is even more important to discuss how to effectively inhibit their emergence．This paper studied the effect of black and white mulch in cold frame on seedling growth of parent and seeds existing in the soil．The results showed that black and white mulch were all beneficial to seedling growth of parent．For the parent seedlings，under black and white mulch the number of leaves，weight of single plant，weight of up-ground plant，and weight of down-ground plant were very significantly higher than those of the CK．While under white mulch，the single plant weight and up-ground plant weight were very significantly higher than those under black mulch．As for the seeds existing in the soil，under black mulch the number of seedlings was the least，single plant weight was mediate．While under white mulch，the number of seedlings was mediate，single plant weight was the highest．In the CK the number of seedlings was maximum，but single plant weight was minimum. These results indicated that black mulch had the best effect on promoting the seedling growth of parent and inhibiting the emergence of seeds existing in the soil．Black mulch in cold frame was the optimal choice．
2015 Vol. 1 (3): 33- [
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558
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479
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38
Effect of Experimental Conditions in TPA Test on Melon Textural Property
LIU Xiang, ZHANG Ping, XU Wei-Xin, ZHANG Shao-Hui, GAO Xing, LIU Li
Taking oriental and mask melons as material， this experiment studied the effect of experimental conditions in texture profile analysis（TPA） on melon textural properties. The result showed that textural properties of different melons were significantly affected by deformation degree. Crosshead speed had not much influence on textural properties. The histological structure of melon flesh appeared little destruction， when deformation degree were 30%-40%. The textural properties had significant correlation with sensory evaluation under 30% deformation degree and 1 mm·s-1 crosshead speed. In conclusion， 30% deformation degree and 1 mm·s-1 crosshead speed were chosen as experimental conditions for TPA test， it could objectively reflect the textural characters of melon flesh structure．
2015 Vol. 1 (3): 38- [
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416
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45
Evaluation of Three Fungicides Control Efficacy on Strawberry Powdery Mildew
LI Na, ZHANG Cong-Shun, ZHANG Tao, SHI Yan-Xia, XIE Xue-Wen, CHAI A-Li, LI Bao-Ju
In order to evaluate the efficacy of 3 fungicides at different concentrations on strawberry powdery mildew（
Sphaerotheca aphanis
），pot experiment and field trials were performed in the current study．The results of pot experiment showed that 42.5% Pyraclostrobin·Fluxapyroxad SC diluted for 2 000 times showed the highest control efficacy on strawberry powdery mildew occurring on the leaves，and its control efficacy reached 90.81%，significantly higher than that of the other treatments．The control efficacy of 30% Triflumizole WP and 50% Kresoxim-methyl WG in pot experiment were 85.58% and 76.21%，respectively．In the field trials，42.5% Pyraclostrobin·Fluxapyroxad SC diluted for 2 000 times produced the best efficacy against strawberry powdery mildew on leaves and fruits．Their control rates were 98.20% and 67.49%， respectively．While，the best control efficacy of 30% Triflumizole WP were 74.72% and 60.78%， respectively．The best control efficacy of 50% kresoxim-methyl WG were 76.00% and 49.01%，respectively．Therefore，these 3 fungicides showed different efficacities against strawberry powdery mildew and all had no injury，all these 3 fungicides produced better efficacy on strawberry powdery mildew occurring at leaves than on fruits．
2015 Vol. 1 (3): 45- [
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438
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49
Cucumber mosaic virus
Resistance in Chinese Pepper Germplasm Resources and Relavent Analysis
ZHANG Xiao-Min, ZHANG Zheng-Hai, MAO Sheng-Li, WANG Xue-Ying, LI Xi-Xiang, WANG Li-Hao, ZHANG Bao-Xi
363 pepper（Capsicum spp. ）local varieties from 31 provinces and cities in China were selected as experimental material， and identification with artificial inoculation was conducted for their resistance to CMV. The result showed that 2 collections were resistant to CMV， 124 were moderately resistant， and 237 were susceptible. At the same time， correlation analysis on disease resistance and other 2 agronomic traits（ florescence， plant height）of these 363 pepper germplasm resources were carried out. The result indicated that florescence and CMV resistance had a significantly positive correlation， and plant height and CMV， resistance had a very significantly negative correlation. Among the accessions with stronger resistance to CMV， the horn pepper，conic pepper， var. acuminaturn Fingern and var. dactylus took a large proportion. The disease resistance of accessions from Central China and East China regions had higher ratio than those from other regions.
2015 Vol. 1 (3): 49- [
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399
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54
Optimization of Edible Lily Seedling Protoplasts Preparation
CHEN Man, TU Yi-Sheng, YE Li-Nan
In this study，plantlet bulblet of Longya Lily（
Lilium brownii
var.
viridulum
Baker）were used as experimental material to optimize protoplasts preparation parameters by orthogonal experiment．Effects of vibrating speed，enzymolysis time，centrifugal speed of harvesting protoplasts，and the sucrose concentration， etc．factors influencing yield of preparing protoplasts were discussed．The results showed that the optimum conditions were combined by 1.0% of cellulase，1.0% of pectinase enzymolysis subcultured for 40 d in vitro regenerated seedling bulblet 3 h，50 r·min
-1
vibrating speed of enzymolysis，700 r·min
-1
centrifugal speed of harvesting protoplasts，6 min centrifugation time，and 25% purified sucrose．With this combined conditions， the per milliliter yield of protoplast isolated from per 1 g seedling bulblet could reach 6.60×106．
2015 Vol. 1 (3): 54- [
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351
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423
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58
A New Tomato F
1
Hyrbid with Resistance to TY——‘ Shouyanfanqie No. 1’
GUO Jia-Jin, LIU Jian-Guo, CHEN Fu-Dong, DONG Tian, WANG Lei, ZHANG Xiao-Yan
‘ Shouyanfanqie No.1’ is a medium maturity tomato F1 hybrid developed by crossing T80965041 as female parent and T80965514 as male parent. It is of unlimited growth type. Its development period is 180 days. The plant is robust with strong growth vigorous. The first flower sets on the 9-11th node. Its fruit setting ability is strong. The fruit is round and flat with smooth surface. The fruit is red in color. The single fruit weight is 230-250 g. The fruit hardness is high. This variety is tolerant to storage and transportation，and has long shelf life. Its resistance to TY and leaf mold than the control‘ Shalong’. Its yield can reach 120-150 t·hm
-2
in greenhouse cultivation. It is suitable to be planted in protected fields in late autumn and early spring in Northern China.
2015 Vol. 1 (3): 58- [
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424
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1420KB] (
486
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60
A New Pumpkin F
1
Hybrid — ‘Guifeng No.1’
LIU Wen-Jun, ZHANG Man, FAN Ai-Li, ZHOU Jian-Hui, HE Zhong, WU Zhi-Xiong, GAO Zhong-Kui, CHEN Qing-Fang
‘ Guifeng No.1’ is a new pumpkin F1 hybrid developed by crossing inbred line 802 as female parent and inbred line 801 as male parent. It is of medium maturity with strong growth vigor. Its fruit development period is about 35 days and the entire growth stage is about 120 days. The first female flower sets on 21-26 nodes， then every 4-6 node has a female flower. The matured fruit is orange-yellow in color and of long hammer shape. The fruit is about 47.7 cm in length and 16.5 cm in diameter. The average single fruit weight is 5.1 kg. The flesh of matured mellon is deep orange red in color， and the thickness is 3.8-4.6 cm. It tastes sweet. Its yield is 32.7 t·hm-2 in spring，and 27.5 t·hm-
2
in autumn. It is suitable to be cultivated in Guangxi Autonomus Region and areas with similar climate conditions.
2015 Vol. 1 (3): 60- [
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357
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1451KB] (
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62
A New Fruit Cucumber F
1
Hybrid ——‘Lyujingling No.5’
LIU Li-Gong, LI Jun, WANG Jing, YANG Hong-Hong, ZHANG Feng
Lyujingling No.5’ is a new fruit cucumber F
1
hybrid developed by crossing excellent DH line 09C38-5 as female parent and inbred line 08C10 as male parent. This variety is gynoecious. It grows with medium vigor. It shows good adaptability to low temperature， weak light and high temperature. It is tolerant to downy mildew， powdery mildew， resistant to brown batch， and highly resistant to Fusarium wilt. Its fruit is about 14-16 cm in length and 2.8 cm in width. Its peel is green in color. The fruit has no wart on its skin. Its contents of soluble solid，VC，and soluble sugar are 4.19%， 117.9 mg·kg
-1
and 17.98 mg·g
-1
， respectively. It is suitable for protected field cultivation almost all over China．Its growing period lasts 7 months. It can yield about 100.5 t·hm-2 under long season cultivation．
2015 Vol. 1 (3): 62- [
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377
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1429KB] (
507
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65
A New Pepper F
1
Hybrid——‘ Zhujiao 21’
JIANG Jun, ZHAO Hong-Xing, WANG Yong, LI Yan
‘Zhujiao 21’ is a pepper F
1
hybrid obtained by crossing male sterile line AB0582 as female parent with inbred line B0318 as male parent. It is of early maturity. Its entire growing period is 182 days. Its fruit is of sheep-horn shape. The fruit is 19.2 cm in length and 3.7 cm in diameter. The average single fruit weight is 44.6 g. The immature fruit is green in color. This variety can yield about 50.7 t·hm
-2
. Its capsaicin content is 26.2 mg·kg
-1
and the VC content is 1 040 mg·kg
-1
. It is suitable to be planted in open and protected fields in early spring.
2015 Vol. 1 (3): 65- [
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484
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1448KB] (
576
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68
ZHANG Yu-Xi
2015 Vol. 1 (3): 68- [
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306
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482
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70
JIN Zhi-Wen, ZHOU Yan-Fang, SHI Yan-Xia, LI Bao-Ju
2015 Vol. 1 (3): 70- [
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313
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682
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72
ZUO Qiang, CHEN Yan-Hua, LIU Dong-Sheng, ZOU Guo-Yuan
2015 Vol. 1 (3): 72- [
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312
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1489KB] (
637
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75
WEI Xiang-Dong, YUE Ling, WANG Jing-Sheng, JIANG Wei-Jie, YU Hong-Jun
2015 Vol. 1 (3): 75- [
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303
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1494KB] (
478
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78
WANG Tie-Chen
2015 Vol. 1 (3): 78- [
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304
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1577KB] (
551
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81
JING Ai-Xia, KUANG Bi-Feng, WEI Zhao-Xin
2015 Vol. 1 (3): 81- [
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331
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1536KB] (
574
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84
QU Yun-Ming, ZHOU Jin-Lian, HU Mei-Hua, CHEN Ai-Hong
2015 Vol. 1 (3): 84- [
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400
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1582KB] (
550
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86
CHENG Zhi-Guo, MENG Xuan-Ning, SUN Xiang-Chun, WANG Ying, QIAN Bao-Ling
2015 Vol. 1 (3): 86- [
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318
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1679KB] (
375
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88
YU Qi-Ying
2015 Vol. 1 (3): 88- [
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337
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1333KB] (
425
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91
2015 Vol. 1 (3): 91- [
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477
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