|Table of Contents|

Effect of Nutrient Solutions With Different Nitrogen Levels on the Growth and Root Morphology of Cucumber Seedlings in Sand Culture(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年07
Page:
17-22
Research Field:
Publishing date:

Info

Title:
Effect of Nutrient Solutions With Different Nitrogen Levels on the Growth and Root Morphology of Cucumber Seedlings in Sand Culture
Author(s):
YU Hongjie1ZHOU Xingang1GUAN Songna12WU Fengzhi1
(1.Department of Horticulture,Northeast Agricultural University,Harbin,Heilongjiang 150030;2.Agricultural Science and Technology Promotion Center of Tangyuan,Tangyuan,Heilongjiang 154700)
Keywords:
cucumbernitrogen efficiencyroot morphologysand culture
PACS:
-
DOI:
10.11937/bfyy.201607005
Abstract:
Cucumber cultivars,‘Jinlyu 30’ and ‘Jinyou 2’,which had low and high nitrogen efficiencies,respectively,were used as test materials.Effects of nutrient solutions contained different levels of nitrogen (0.875,3.500 mmol/L) on the growth and root morphology of cucumber cultivars with differing nitrogen efficiencies were investigated.The results showed that on the 21th and 28th day after cucumber seeding,the leaf area,aboveground and belowground dry biomass,total root length and surface area,root tip number of cucumber cultivar with high nitrogen efficiency were higher than that of cultivar with low nitrogen efficiency when supplied with normal nitrogen (3.500 mmol/L),under the condition of low nitrogen (0.875 mmol/L),the plant height and stem diameter of cultivar with low nitrogen efficiency were higher than that of cultivar with high nitrogen efficiency,but the other index between the two cultivars had no significant difference except the root tip number of cucumber cultivar with high nitrogen efficiency were higher than that of the cultivar with low nitrogen efficiency at 28 days.21 days after seeding,the length and surface area of roots with diameter in the range of 0.0 mm<D≤0.5 mm,0.5 mm<D≤1.0 mm and 1.0 mm<D≤1.5 mm were higher for cultivar with high nitrogen efficiency supplied with normal nitrogen than other treatments,and there was no significant difference between the two cultivars when supplied with low nitrogen;28 d after seeding,the length of roots with diameter in the range of 0.0 mm<D≤0.5 mm were higher for cultivar with high nitrogen efficiency supplied with normal nitrogen than cultivars with low nitrogen efficiency supplied with normal nitrogen,and there was no significance between the treatments with low nitrogen either.Overall,aboveground and belowground dry biomass,root length and surface area,and root tip number can be used as reference indexes when screening cucumber cultivars with high nitrogen efficiency,and root tip number could provide a basis for choosing cucumber high nitrogen efficiency cultivar in low nitrogen condition.

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Last Update: 2016-05-27