Effects of Substrates Composition Ratio on Growth and Photosynthetic Characteristics of Bougainvillea spectabilis

doi:10.11924/j.issn.1000-6850.casb2022-0427

Abstract

Abstract:

In order to study the most suitable matrix composition for different cultivars of Bougainvillea spectabilis, the current-year and healthy ‘Yunnan Purple’, ‘Greenery Orange’, ‘Chaozhou Red’, ‘Leaflet Purple’, ‘Snow White’ and ‘California Yellow’ were selected as experimental materials to measure the ground diameter, main stem increment, longest branch increment, biomass, chlorophyll content and photosynthetic parameters. The results showed that the ground diameter increment, main stem increment, chlorophyll content, leaf biomass and photosynthetic parameters of different Bougainvillea varieties had significantly different variation trends under different substrate treatments. ‘Chaozhou Red’, ‘Leaflet Purple’ and ‘Greenery Orange’ under the garden soil: peat soil: perlite (1:1:1) substrate treatment showed a higher trunk length increase; the highest value of the ‘Greenery Orange’ on leaf biomass was under the garden soil: peat soil: chaff (1:1:1). The highest value of leaf biomass of ‘Greenery Orange’ appeared in the matrix treatment of garden soil: peat soil: rice husk (1:1:1). In addition, ‘Chaozhou Red’ and ‘Leaflet Purple’ showed higher stem biomass when treated with garden soil: peat soil: perlite (1:1:1). The chlorophyll a content of ‘Yunnan Purple’, ‘Chaozhou Red’, ‘Leaflet Purple’, ‘Snow White’ and ‘Greenery Orange’ showed the highest value in pure peat soil, and the change trend of chlorophyll b was similar to that of chlorophyll a. The net photosynthetic rate (Pn) of ‘Chaozhou Red’ and ‘Yunnan Purple’ had the highest value when garden soil: peat soil: rice husk (1:1:1). Therefore, there are great differences in the most suitable substrate composition among different cultivars of Bougainvillea spectabilis, ‘Chaozhou Red’, ‘Leaflet Purple’, ‘Snow White’ and ‘California Yellow’ are suitable for substrate composition of pure garden soil or garden soil: peat (1:1); ‘Yunnan Purple’ and ‘Greenery Orange’ are suitable for garden soil: peat soil: perlite (1:1:1) or garden soil: peat soil: chaff (1:1:1) matrix.

Key words: Bougainvillea spectabilis, substrate, growth, chlorophyll, photosynthetic parameters

HUANG Jian, YAO Hang, ZHANG Xule, QIAN Renjuan, ZHENG Jian, MA Xiaohua. Effects of Substrates Composition Ratio on Growth and Photosynthetic Characteristics of Bougainvillea spectabilis[J]. Chinese Agricultural Science Bulletin, 2025, 41(4): 66-73.

Figures/Tables 4

References 25

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