Effect of inoculation with arbuscular mycorrhizal fungi on growth of Catalpa bungei

IF 1.5 4区农林科学 Q2 FORESTRY

New Zealand Journal of Forestry Science Pub Date : 2022-02-23 DOI:10.33494/nzjfs522022x160x

Panpan Meng, W. Chen, H. Feng, Shouxia Zhang, Junhui Wang, Wenjun Ma, Guijuan Yang, Chunyan Wang

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引用次数: 1

Abstract

Background: Catalpa bungei is a well-known, valuable, ornamental, high-quality timber tree traditionally cultivated in China because of its excellent quality, decay resistance, wide applicability, and attractive form. The aim of this study was to evaluate the effects of inoculation with arbuscular mycorrhizal fungus (AMF) on the transplant survival rate and growth of C. bungei seedlings under greenhouse conditions. Methods: Two treatments were applied in a completely randomized experimental design: inoculation with Rhizophagus intraradices, and, as a control, soil without inoculum. Results: Four months after inoculation, AMF had colonized 76.05% of plant roots and significantly improved plant growth. With the establishment of the symbiotic relationship, AMF inoculation significantly improved the seedling transplant survival rate by 20%, promoted major growth traits (plant height, basal diameter, leaf area, and specific leaf area), accelerated biomass accumulation (roots, stems, and leaves), and changed the biomass allocation patterns. In addition, compared with non-inoculated treatments, inoculation with AMF increased photosynthetic parameters and chlorophyll contents, elevated major root morphological parameters, changed the proportion of particle sizes of soil micro-aggregates, and promoted the accumulation of nutrients in roots and leaves. Conclusions: The effects on transplant survival, growth and development were more pronounced in C. bungei seedlings inoculated with R. intraradices. Mycorrhizal seedlings of C. bungei can therefore be widely applied in plant transplantation and production practices.

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丛枝菌根真菌接种对楸树生长的影响

背景：楸树以其优良的品质、耐腐性、广泛的适用性和诱人的外形，是我国传统栽培的一种知名、珍贵、观赏性强的优质用材树。本研究的目的是评估在温室条件下接种丛枝菌根真菌（AMF）对蹦极幼苗移植存活率和生长的影响。方法：在完全随机的实验设计中应用两种处理：接种根内根霉和作为对照的不接种土壤。结果：接种4个月后，AMF定植率为76.05%，显著改善了植株生长。随着共生关系的建立，AMF接种显著提高了幼苗移植成活率20%，促进了主要生长性状（株高、基部直径、叶面积和比叶面积），加速了生物量积累（根、茎和叶），并改变了生物量分配模式。此外，与未接种处理相比，接种AMF提高了光合参数和叶绿素含量，提高了主要根系形态参数，改变了土壤微团聚体的粒径比例，促进了养分在根和叶中的积累。结论：根内接种R.bengi对移植成活、生长发育的影响更为显著。因此，丛枝菌根苗可广泛应用于植物移植和生产实践中。

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来源期刊

New Zealand Journal of Forestry Science FORESTRY-

CiteScore

2.20

自引率

13.30%

发文量

审稿时长

39 weeks

期刊介绍： The New Zealand Journal of Forestry Science is an international journal covering the breadth of forestry science. Planted forests are a particular focus but manuscripts on a wide range of forestry topics will also be considered. The journal''s scope covers forestry species, which are those capable of reaching at least five metres in height at maturity in the place they are located, but not grown or managed primarily for fruit or nut production.