Scientia Agricultura Sinica ›› 2019, Vol. 52 ›› Issue (14): 2515-2524.doi: 10.3864/j.issn.0578-1752.2019.14.010

• HORTICULTURE • Previous Articles     Next Articles

Establishment of Appraisal System for the Stem and Branch Characteristics and Varieties Evaluation of Spray Cut Chrysanthemum

MA WanRu,FANG WeiMin,WANG HaiBin,ZHANG Fei,CHEN SuMei,CHEN FaDi,GUAN ZhiYong()   

  1. College of Horticulture, Nanjing Agricultural University/State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Landscaping, Ministry of Agriculture and Rural Affairs, Nanjing 210095
  • Received:2019-03-04 Accepted:2019-04-26 Online:2019-07-16 Published:2019-07-26
  • Contact: ZhiYong GUAN E-mail:guanzhy@njau.edu.cn

Abstract:

【Objective】Since the characteristics of stems and branches were important commercial traits of cut chrysanthemum, the present study was to establish an appraisal system for selecting stem and branch characteristics of spray cut chrysanthemum, which provided theoretical guidance for screening superior varieties. 【Method】Observing and counting 9 factors related to the characteristics of stems and branches of 300 spray cut chrysanthemum varieties in the consecutive two years, an appraisal system was established by means of expert consultation, analytic hierarchy process and K-Means cluster method to carry out variety evaluation.【Result】The weight of the 9 factors was determined by analytic hierarchy process. Flower lateral convergence, flower vertical convergence, flower branch angle, stem filling degree had the most important impact, and weight was 0.219, 0.219, 0.123 and 0.121, respectively. Then combined the score criterion, 300 varieties were classified into 4 grades by K-Means cluster method. There were 62 varieties graded excellent, 114 graded good, 80 graded general and 44 graded poor, the proportion was 20.7%, 38%, 26.7% and 14.6%, respectively.【Conclusion】The system constructed by expert survey method, analytic hierarchy process and K-Means cluster analysis method could effectively evaluate the stem and branch characteristics of spray cut chrysanthemum varieties, and the selected varieties could be promoted in production.

Key words: spray cut chrysanthemum, stem and branch characteristics, analytic hierarchy process, appraisal system, K-Means cluster analysis

Fig. 1

The grade diagram of flower branch angle (A, B, C are correspondence with the scores of 3, 2, 1) A: Nannong Bingqilin; B: Nannong Luxiu; C: Nannong Jintaiyang"

Fig. 2

The grade diagram of flower branch curvature (A, B are correspondence with the scores of 3, 1) A: Nannong Qiuyue; B: Riyin-2"

Fig. 3

The grade diagram of stem filling degree (A, B, C are correspondence with the scores of 3, 2, 1) A: Nannong Hengchun; B: Nannong Daichun; C: Fenbaijianse. Bar: 1 mm"

Fig. 4

The grade diagram of flower lateral convergence (A, B, C are correspondence with the scores of 3, 2, 1) A: Nannong Jinlu; B: Nannong Jinsong; C: Nannong Hengchun"

Fig. 5

The grade diagram of flower vertical convergence (A, B, C are correspondence with the scores of 3, 2, 1) A: Nannong Danjincui; B: Nannong Huanglongyu; C: Harley Red"

Table 1

The AHP model of stem and branch factors of spray cut chrysanthemum"

目标层 Target layer 多头切花菊茎枝特性 The stem and branch factors of spray cut chrysanthemum (A)
准则层
Criteria layer
茎长特性
Plant factor (B1)
茎粗特性
Stem factor (B2)
花枝特性
Flower factor (B3)
方案层
Program layer
茎长
PH (C1)
茎长整齐度
HU (C2)
茎粗
SD (C3)
茎充实程度
SFD (C4)
花枝曲直性
FBC (C5)
花枝强度
FBH (C6)
花枝角度
FBA (C7)
花朵横向聚拢程度
FLC (C8)
花朵竖向聚拢程度
FVC (C9)

Table 2

The results of matrix and its consistency examine"

Table 3

The score criterion of all factors"

因子
Factor
分值 Score
3 2 1
茎长 Plant height (cm) >80 65-80 <65
茎粗 Stem diameter (mm) 4.40—5.30 5.30—6.00 <4.40、>6.00
花枝角度Flower branch angle (°) <30 30-50 >50
花枝曲直性Flower branch curvature 直Vertical / 弯Bent
茎充实程度Stem filling degree 充实Stuff 中等 Medium 中空Hollow
花枝强度Flower branch hardness (N) >30 20—30 <20
花朵横向聚拢程度Flower lateral convergence 重叠Overlapped 聚拢Compact 分散Dispersal
花朵竖向聚拢程度Flower vertical convergence 1/9 2/9 3/9
茎长整齐度Height uniformity < 0.095 0.095—0.160 > 0.160

Table 4

The weight value of each factors"

层次B对目标层A
Criterion layer B contribute to target layer A
B1
0.115
B2
0.182
B3
0.703
层次C对准则层B
Index layer C contributes to criterion layer B
C1
0.333
C2
0.667
C3
0.333
C4
0.667
C5
0.087
C6
0.116
C7
0.175
C8
0.311
C9
0.311
层次C对目标层A
Index layer C contributes to target layer A
0.038 0.076 0.061 0.121 0.061 0.082 0.123 0.219 0.219

Table 5

The score and grade of partial spray cut chrysanthemum"

品种名称 Variety 得分 Score 等级 Grade 品种名称 Variety 得分 Score 等级 Grade
南农衡韵 Nannong Hengyun 2.901 1 南农嵩云Nannong Songyun 2.348 2
南农冰清 Nannong Bingqing 2.848 1 南农紫庐Nannong Zilu 2.348 2
南农冰淇淋 Nannong Bingqilin 2.819 1 南农火炬 Nannong Huoju 2.340 2
南农衡阳 Nannong Hengyang 2.725 1 南农峨眉 Nannong Emei 2.226 3
南农粉玉 Nannong Fenyu 2.719 1 南农思绿 Nannong Silv 2.226 3
南农庐霞Nannong Luxia 2.673 1 南农彩丝带 Nannong Caisidai 2.219 3
南农冰洁 Nannong Bingjie 2.673 1 南农翠玉 Nannong Cuiyu 2.203 3
南农秋庐 Nannong Qiulu 2.649 1 南农金光 Nannong Jinguang 2.163 3
南农红橙 Nannong Hongcheng 2.547 2 南农锦缎 Nannong Jinduan 2.153 3
南农红楼 Nannong Honglou 2.546 2 南农雪松 Nannong Xuesong 2.062 3
南农秋岳 Nannong Qiuyue 2.515 2 南农碧云 Nannong Biyun 2.060 3
南农岱华 Nannong Daihua 2.498 2 南农冰雪 Nannong Bingxue 2.039 3
南农衡春 Nannong Hengchun 2.462 2 南农艳紫 Nannong Yanzi 2.015 3
南农金太阳 Nannong Jintaiyang 2.337 2 南农绿玫瑰 Nannong Lvmeigui 2.007 3
南农香橙 Nannong Xiangcheng 2.410 2 南农星梦 Nannong Xingmeng 1.962 4
南农粉莺 Nannong Fenying 2.401 2 南农瑗绿 Nannong Yuanlv 1.961 4
南农旋绿 Nannong Xuanlv 2.401 2 南农玉绒 Nannong Yurong 1.955 4
南农庐春 Nannong Luchun 2.399 2 南农茶语 Nannong Chayu 1.908 4
南农黄珑玉 Nannong Huanglongyu 2.393 2 南农古笙 Nannong Gusheng 1.857 4
南农玫粉 Nannong Meifen 2.363 2 南农紫云间 Nannong Ziyunjian 1.697 4
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