|Table of Contents|

Response of Seedling Growth Characteristics to Different Levels of Phosphorus in Two Species of Walnut

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年12
Page:
25-32
Research Field:
Publishing date:

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Title:
Response of Seedling Growth Characteristics to Different Levels of Phosphorus in Two Species of Walnut
Author(s):
LIU Chunhua123XIE Fu4WANG Yang123HU Kaihong123LUO Lixin5ZHANG Rui123
(1.Key Laboratory for Conservation and Utilization of Biological Resources in Tarim Basin,Xinjiang Production and Construction Corps,Alar,Xinjiang 843300;2.College of Plant Science,Tarim University,Alar,Xinjiang 843300;3.National and Local Joint Engineering Laboratory of High Efficiency and High Quality Cultivation and Deep Processing Technology of Characteristic Fruit Trees in Southern Xinjiang,Alar,Xinjiang 843300;4.Aksu College of Education...
Keywords:
walnut seedlingphosphorus levelsgrowthleaf tissue anatomyroot morphology
PACS:
-
DOI:
10.11937/bfyy.20194399
Abstract:
The seedlings of Khotan native walnut germplasm and Aksu native walnut germplasm were used as research materials.The effects of different phosphorus levels(0、7、14、21、28 g per plant)on walnut rootstocks from two provenances were explored.The growth,leaf anatomical structure and root morphological characteristics of walnut seedlings in two sources were studied by direct seeding method.The optimum phosphorus application rate of walnut seedlings from two sources was obtained,which provided a theoretical basis for the efficient use of phosphate fertilizer in walnut seedlings.The results showed that from the perspective of the growth of walnuts and anatomical structure of the leaves the Khotan walnut germplasm had the highest growth rate of 14 g per plant,and the growth of Aksu walnut germplasm reached 7 g per plant.The increase of soil phosphorus level could significantly promote the growth and development of roots,but it could significantly inhibit the growth of walnuts after the walnut adapts to the best adaptation point of phosphorus.The Khotan and Aksu walnut germplasms were at the optimum point of phosphorus supply level of 14 g and 7 g per plant,respectively.The total length,total surface area,total volume,average diameter,total root tip number and fractal dimension of the roots were the largest.Under the conditions of phosphorus supply level of 14 g and 7 g per plant,the growth,leaf tissue anatomy and root growth of Khotan and Aksu walnut seedlings were beneficial.The high or low phosphorus level was not conducive to the growth and development of walnut seedlings.Under low phosphorus stress,the inhibition was stronger than that under high phosphorus stress,indicated that walnut seedlings were more suitable for low phosphorus environment.

References:

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Last Update: 2020-08-19