Effects of phosphorus fertilizing on growth and root morphology of Salvia splendens var. Chengxiang Gongzhu

doi:10.3969/j.issn.1004-1524.2018.03.05

›› 2018, Vol. 30 ›› Issue (3): 386-392.DOI: 10.3969/j.issn.1004-1524.2018.03.05

• Horticultural Science • Previous Articles Next Articles

Effects of phosphorus fertilizing on growth and root morphology of Salvia splendens var. Chengxiang Gongzhu

TONG Jing^1,2, LI Suyan^1,*, SUN Xiangyang¹, LIU Kefeng², WANG Hongwei², YANG Meiyan³

1. College of Forestry, Beijing Forestry University, Beijing 100083, China;
2. Urban and Rural Development College, Beijing University of Agriculture, Beijing 102206, China;
3. Landscape Architecture Section, Hangzhou Tourism Vocational School, Hangzhou 310052, China

Received:2017-06-25 Online:2018-03-20 Published:2018-03-21

Abstract

Abstract: Salvia splendens var. Chengxiang Gongzhu was supposed as typical garden plant, different phosphorus nutrition solution levels were employed to study their effects on the growth and root morphology of the plants. Six phosphorus concentration levels of 0, 15, 30, 60, 90 and 120 mg·L^-1(named as P₀, P₁, P₂, P₃, P₄, P₅) were applied respectively. The results showed that with the increase of phosphorus application, plant height, crown diameter, ground diameter, leaf area, shoot and root dry weight, total root volume, and root average diameter firstly significantly increased and then dropped, which all reached a maximum in P₂ treatment. Chlorophyll a content and total chlorophyll content reached the highest in P₁ treatment, and showed significant difference compared with other treatments (P<0.05). As the concentration of P increased, total root length reached the maximum in P₅ treatment. The growth index, chlorophyll content and root characteristics in P₀ treatment were all the smallest, indicating the developmental delay. Based on this study, P concentration between 15-30 mg·L^-1 would be most suitable for the Salvia splendens var. Chengxiang Gongzhu.

Key words: Salvia splendens var. Chengxiang Gongzhu, phosphorus nutrient solution, vegetative growth, root morphology

CLC Number:

S681.4

TONG Jing, LI Suyan, SUN Xiangyang, LIU Kefeng, WANG Hongwei, YANG Meiyan. Effects of phosphorus fertilizing on growth and root morphology of Salvia splendens var. Chengxiang Gongzhu[J]. , 2018, 30(3): 386-392.

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Effects of phosphorus fertilizing on growth and root morphology of Salvia splendens var. Chengxiang Gongzhu

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