This paper summarized the species and application methods of daily used plant growth regulator，
and also chemical regulation technology applied in vegetable seedling culture. In addition，the paper prospected
the future tendency for studies on plant growth regulators，aiming at providing references for chemical regulation
technology in vegetable seedling culture and cultivating high quality vegetable seedlings.

This paper tested the nutritional components of the novel germplasm resource Cucumis metuliferus，
and evaluated its antioxidant activities by series of methods，including high performance liquid chromatography，
ultraviolet spectrophotometer and full-automatic amino acid analyzer．The results showed that Cucumis metuliferus was
rich in nutrients containing with VC， polyphenols，saccharides and amino acids．The VC content was 125 mg·kg^-1，
the polyphenols content was 314 mg·kg^-1，the total soluble saccharides and soluble polysaccharides content were
2.7% and 0.5%，respectively．The total free amino acid and essential amino acid content were 9 908、3 120
mg·kg^-1，respectively．The weights of moisture and ash were determined as 95.0% and 0.6% of their fresh weights，
respectively．Antioxidant ability of Cucumis metuliferus was detected．Half scavenging capacity of DPPH free radical
and hydroxyl radical in Cucumis metuliferus was measured as 0.060 g·mL^-1 and 0.036 g·mL^-1，respectively．

Hydroponic experiment was conducted to study the effect of different Cd levels（0、20、40 mg·L^-1）on dry weight，Cd concentration of root，stem，leaf and Cd transport from root to shoot between 2 pepper varieties（PE3 and PE30）. The results showed that dry weight and Cd content increased with the increase of Cd level（C_Cd ≤ 40 mg·L^-1），and the tolerance to Cd of different pepper varieties was also different. Under the same Cd treatment，Cd concentrations of 2 pepper varieties were in the order of root ＞ stem ＞ leaf. Significant differences in Cd accumulation and translocation were observed between 2 pepper varieties. Cd concentration in the stems and leaves，and Cd translocation coefficient and shoot Cd enrichment coefficient of PE30 were higher，which might lead to the risk of excessive Cd in fruit. Root was the primary tissue of Cd accumulation in PE3，and the ability to transport Cd from root to shoot was poorer，so PE3 could be planted in Cd lightly contaminated soil.

Genotype identification is an important link in molecular-marker-assisted breeding and genetic
analysis of gene function．Since this method is used more and more frequently，researchers need a high-throughput
technique．This experiment took a pair of SSR primers of complementary type as the method，and compared
the effect of extracting DNA from cotyledon and root during seedling stage．The effect of extracting DNA from each
tissue of the plant by NaOH-boiling method during maturing stage was also verified．The results indicated that
extracting DNA from root with NaOH-boiling method was a rapid way to measure seed purity．Therefore，extracting
DNA with NaOH-boiling method from all tissues of the matured plant could be used for screening plant genotype．

In order to clarify the occurrence of Tomato chlorosis virus（ToCV）on eggplant in Shandong
Province，this paper detected and identified by RT-PCR the samples of eggplant leaves prospectively infected
by ToCV and also the viruliferous percentage of ToCV in Bemisia tabaci adults on infected eggplant plants．The
results showed that 463 bp specific fragments were amplified from the detected samples and 6 samples were positive
for ToCV and the positive percentage was 60%．The CP gene of positive samples were cloned and sequenced，
sharing over 99.0% nucleotide identity with a tomato isolate from Beijing（BJ）．Moreover，ToCV could be
detected in B. tabaci on ToCV-infected eggplant plants and the viruliferous percentage of ToCV was 70%．

This paper studied the effect of oligosaccharide on controlling eggplant Corynespora leaf spot
and reducing the dose. The results indicated that spraying oligosaccharide with 100 μg·mL^-1 concentration for 3
times，the controlling effect on eggplant Corynespora leaf spot was pretty good，and the control effect was up to
62.56%. The activities of SOD，POD and CAT were obviously increased. After spraying oligosaccharide with 100
μg·mL^-1 concentration for 3 times，then spray boscalid with 50 μg·mL^-1 concentration，the control effect was
similar to that of only spraying boscalid with 100 μg·mL^-1 concentration. Both methods could obviously reduce the
disease index of eggplant Corynespora leaf spot，and the effect of reducing the dose was obviously observed.

Cruciferous vegetables，including Chinese cabbage，kale，turnip，etc．are major vegetables planted in areas，with high altitude of Hubei Province．Recently，pests have caused serious damages heavily influenced the yield and quality of cruciferous vegetable．This paper carried out investigation from 2011-2015 on the pest species composition and distribution rule of highland cruciferous vegetables，by field survey combined with asking farmers method at experiment sites in Huoshaoping town and Ziqiu town，Changyang County，Hubei province with altitude of 400 m，800 m，1 200 m，1 600 m and 1 800 m，respectly．The results showed that pests of highland cruciferous vegetable consisted of 52 species of insect pests and 2 species of molluscs
and they belonged to 7 orders and 28 families．Among them 16 species were severe pests．Their occurance mainly concentrated from June to etember．We found that the pest species numbers decreased with altitude rising and presented evident vertical distribution．Locusts were rarely discovered in the area above 1 200 m altitude．Lepidoptera pests could cause serious damage in the area between 400-1 800 m altitude．Coleoptera and Heteroptera pests were mainly distributed in the area between 400-1 200 m altitude．

Based on the questionnaire survey data from strawberry growers in Beijing，this paper carried
out descriptive statistical analysis on the basic characteristics of strawberry postharvest situation form 9 districts
of Beijing，including the basic information of interviewees，varieties planted，sale-types，preservation and
processing，packaging and transportation，landscape and brand，postharvest technology and need for policy
support，etc. The survey results showed that for farmer households，cooperatives，and gardens，these 3 operation
entities，‘Hongyan’strawberry was the mostly cultivated variety，and picking sale was the major sales type. The
fresh keeping technology for postharvest strawberry was seldom applied. The interviewees，who had conducted
strawberry postharvest processing only accounted 13.8%. The major way for product transportation was customer
self-access. Collision in transportation was the main reason for the loss of strawberry. 29.4% of interviewees had
their own strawberry brands. The most important thing that the interviewees wanted to know about postharvest
technology was creative marketing. They urgently hoped that the superior departments could help them to establish
a cooperative platform for strawberry production and marketing.

‘Sujiao No.27’ is a new hot-pepper F₁ hybrid developed by crossing a hot pepper inbred line
‘09Q37’as female parent with a sweet pepper inbred line‘ G09005’as male parent．It is of mid-maturity．
The first flower sets on the 12th node．Its fruit is of ox horn shape．It is 19.0 cm in length，4.8 cm in width，0.37
cm in fruit peel thickness．The single fruit weight is 95.2 g．The fruit has smooth surface and is slight green in
color．It tastes a little bit hot and crispy with good commercial character．It can yield about 57.8 t·hm^-2，and is
suitable for protected cultivation in spring in the lower-middle reaches of the Yangtze River．

‘Changfeng No.10’ is a new tomato F₁ hybrid developed by crossing inbred line‘ R025’ as female
parent and‘ R018’ as male parent in 2011．It is of early-medium maturity and unlimited growth type with strong
growth vigour and larger leaves．The matured fruit is red in color without green shoulder．Its successive fruit
setting ability is strong．The average yield is about 114 t·hm^-2．The sepals of‘ Changfeng No.10’ are base flat．
The fruit is tall and round in shape with short fruit stem，small areola，smooth peel and beautiful appearance．
The single fruit weight is about 200 g．The fruit hardness is good．This variety is tolerant to transportation and has
long shelf life．The soluble solid content is 5.7%，total sugar content is 3.34%，total acid content is 0.335%．
It has Ty-1 and Ty-3 genes resistant to Tomato yellow leaf curl virus（TYLCV）．It is suitable to be cultivated in
solar green house and under plastic shelter at Shaanxi Province and northwestern China．

‘Longzao No.1’ is a new cucumber F₁ hybrid developed by crossing inbred line‘ H1121’ as female
parent and inbred line‘ 12-9’ as male parent．The plant is gynecious with medium growth vigor and of early
maturity．The fruit is about 22 cm in length．The fruit is of straight shape，and tastes sweet and crispy．It has
light green peel with a few white spines．It is tolerant to low temperature and weak light．It is high resistant to
Fusarium wilt，resistant to angular leaf spot and target leaf spot．Its yield is about 45 t·hm^-2．It is suitable for
protected cultivation in spring in Heilongjiang Province．

‘Guinongke No.9’ is a new bitter gourd F₁ hybrid developed by crossing‘ MC72’ as female parent
and‘ MC104’ as male parent．It is of early maturity，high-yield and chilling tolerance．The first female flower
is setting at the 6-8th joint．Its fruit is of long stick shape．The fruit is dark green in color with full and shining
tumors in fruit peel．It is 30-35 cm in length，6 cm in diameter，and 1 cm in flesh thickness．The average
single fruit weight is about 420 g．Its fruit tastes sweet and a little bitter，and has crispy flesh．Its resistances to
powdery mildew and Fusarium wilt are stronger than that of the contrast‘ Cuifei’．It can yield over 54 t·hm^-2．It
is suitable for early spring and late autumn cultivation in open fields or under plastic shelter in southern China ．

‘Yongxue No.4’ is a new leaf-edible mustard F₁ hybird developed by crossing cytoplasmic male
sterile line‘ 07-50A’ as female parent and inbred line‘ 07-10’ as male parent．Its growing period is about 105
days from sowing to harvest．The plant is of opened type．It has strong growth vigor．Its leaf is light green in color
with double serrate and shallow sawtooth．The average effective tiller number is 27．The single fruit weight is 1.4
kg．It can yield about 75 t·hm^-2．It has good yielding ability．It is resistant to virus disease．After processing，
it is yellow and bright in color with good quality．It is suitable to be cultivated in the Yangtze River valley in
spring，autumn and winter．

‘Fengguan No.3’ is a chieh-qua F₁ hybrid developed by crossing inbred line‘ P-1’ as female
parent and local variety‘ Qixingzi No.6’ as male parent．This variety has strong growth vigor．It is of early
maturity and takes 70-80 days from spring sowing to first harvest，and 45-55 days in autumn sowing to first
harvest．The fruit is of long cylinder shape with dark green peel，21-23 cm in length，7.6-8.0 cm in diameter．
The single fruit weight is 750 g．The fruit quality is good．Its white flesh is firm with mild flavor．It is resistant to
Fusarium wilt．It can yield 60.0-67.5 t·hm^-2．It is suitable to be cultivated in open fields at South China region
in spring and autumn．

Using superior germplasm resources both from China and France，cherry radish male sterile line
‘CA12-18’ and inbred line‘ C34-1’ were bred．Cherry radish new variety‘Jingyanhongyingtao’ was selected
and developed on the basis of these materials．The root shape is round with good uniformity and superior commercial
characters．The peel is dark red in color and its flesh is white．The single plant weight is about 20 g and single root
weigh is 16 g，respectively．Its average yield is 24 t·hm^-2．It takes 25-30 days from sowing to harvesting．Its
growing period may be postponed under low temperature condition．It is resistant to virus disease．It is suitable for
cultivation in open fields in spring and autumn and in greenhouse in winter and spring in northern China．

The fresh sweet glutinous corn variety‘ Tianxiangnuo No.9’ is developed by crossing‘ RDE007B’
as female parent and‘ EZ-20’ as male parent．It is suitable for wide region planting with good palatability．
The whole growth period in spring is 106 days．It is middle resistant to head smut and maize basal stalk rot，and
highly resistant to common smut．The plant height is 238 cm，ear height is 102 cm．The filament is light green in
color．Its cluster is of cone shape and 20.2 cm in length．There are 15.2 rows of spike，and 38.6 grains in each
row．Its cob is white in color and horse teeth shape grain．The hundred grain weight is 38.8 g．The average yield
is about 15 t·hm^-2．It can be grown in Gansu，Qinghai，Shaanxi Provinces and Xinjiang，Tibet，Ningxia and
Inner Mongolia Autonomouse Regions．