Quality Grading Standards of Rheum palmatum Seedlings

Rui-zhen DONG; Yuan CHEN; Feng-xia GUO; Qian LI

doi:10.13422/j.cnki.syfjx.20192313

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Quality Grading Standards of Rheum palmatum Seedlings

Resource and Quality Evaluation | 更新时间：2021-02-09

- Quality Grading Standards of Rheum palmatum Seedlings
- Chinese Journal of Experimental Traditional Medical Formulae Vol. 25, Issue 24, Pages: 104-110(2019)
- 作者机构：
  
  1.甘肃农业大学　农学院，生命科学技术学院，甘肃省作物遗传改良与种质创新重点实验室，甘肃省中药材规范化生产技术创新重点实验室，甘肃省药用植物栽培育种工程研究中心，甘肃省干旱生境作物重点实验室，兰州　 730070；
  2.甘肃中天药业有限责任公司，甘肃省特色药用植物资源保护与利用工程实验室，甘肃省特色药材规范化可追溯栽培工程技术研究中心，甘肃　定西　 748100
- 作者简介：
- 基金信息：
- DOI：10.13422/j.cnki.syfjx.20192313
  CLC： R289; R284.1; R22; R2-031
- Published：20 December 2019，
  
  Published Online：19 August 2019，
  
  Received：14 February 2019，
- 稿件说明：
扫描看全文
Rui-zhen DONG, Yuan CHEN, Feng-xia GUO, et al. Quality Grading Standards of Rheum palmatum Seedlings. [J]. Chinese Journal of Experimental Traditional Medical Formulae 25(24):104-110(2019)
DOI：

Rui-zhen DONG, Yuan CHEN, Feng-xia GUO, et al. Quality Grading Standards of Rheum palmatum Seedlings. [J]. Chinese Journal of Experimental Traditional Medical Formulae 25(24):104-110(2019) DOI： 10.13422/j.cnki.syfjx.20192313.

摘要

目的：

研究掌叶大黄种苗质量分级标准。

方法：

通过对甘肃省道地产区不同产地的80份掌叶大黄种苗单株鲜重、根长、根粗、侧根数、种苗病斑程度等质量指标检测，并以各项数据的K均值聚类分析结果为划分种苗质量等级的参考依据。

结果：

以单株鲜重、根长、根粗为主要分级指标将掌叶大黄种苗分为4个等级，即特大种苗单株重>30.0 g，根粗>2.3 cm，根长>30.0 cm，侧根多，芽完整，无病斑、伤口；一级种苗单株重≥25.0 g，根粗≥2.1 cm，根长≥25.0 cm，无基部直径>3 mm的侧根，芽完整，无病斑、伤口；二级种苗单株重≥20.0 g，根粗≥1.8 cm，根长≥20.0 cm，无基部直径>4 mm的侧根，芽完整，无病斑、伤口；三级种苗单株重≥15.0 g，根粗≥1.5 cm，根长≥15.0 cm，有少数侧根，芽基本完整，无病斑、伤口。

结论：

收集的80份掌叶大黄种苗样品中，一、二级种苗占68.8%，不同等级掌叶大黄种苗经大田移栽成药后鲜产量一级>特大苗>二级>三级种苗，植株抽薹率特大苗>一级>二级>三级种苗。因此在规范化生产中不建议采用特大种苗，应以一、二级种苗为宜。

Abstract

Objective:

To study the quality grading standards of

Rheum palmatum

seedlings.

Method:

The quality indicators

such as fresh weight

root length

root diameter

number of lateral roots and seedling lesions

of 80

palmatum

seedlings from different producing areas in Gansu Provincial Real Estate District were detected

and the K-mean cluster analysis results of each data were used as reference basis for dividing the seedling quality level.

Result:

The fresh leaf weight

root length and root diameter were used as the main grading indicators to classify the rhubarb seedlings into four grades. Specifically

the extra-large seedlings have a plant weight >30.0 g

the root diameter>2.3 cm

and the root length >30.0 cm

with lateral roots

buds intact

no lesion

wounds. The first grade seedlings have a plant weight ≥25.0 g

root diameter≥2.1 cm

root length ≥25.0 cm

with no lateral root of more than 3 mm in diameter

bud intact

disease-free spots and wounds. The second grade seedlings have a plant weight ≥20.0 g

roots ≥1.8 cm

root length ≥20.0 cm

with no lateral roots with a basal diameter of more than 4 mm

complete buds

no lesion

wounds. The third grade seedlings have a plant weight ≥15.0 g

root thickness ≥1.5 cm

root length ≥15.0 cm

with a few lateral roots

intact buds

no lesion

wounds.

Conclusion:

Among the 80 samples of

palmatum

seedlings collected

the second and third grade seedlings accounted for 68.8%. The different grades of

palmatum

seedlings were transplanted as herbs after field processing. In terms of the fresh yield

the first grade

extra-large seedling

the second grade

the third grade seedlings

and in the plant twitch rate

extra-large seedlings

the first grade

the second grade

the third grade seedlings. Therefore

the first and second seedlings are recommended standardized production

rather than extra-large seedlings.

关键词

掌叶大黄种苗质量标准鲜产量抽薹率

Keywords

Rheum palmatumseedlingquality standardfresh yieldtwitch rate

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