Bùi Hồng Hải *

* Tác giả liên hệ (bdhai@nomail.com)

Abstract

A comparative study of the root system structure characteristics of Solanaceae based on 31 genotypes from 3 important groups (aubergines, capsicums and tomatoes) in hydroponic culture versus in soil cultivation conditions. Quantitative traits were mainly obtained from measurements on high resolution images of different plant parts at several growth stages. Hydroponic culture helped to observe exactly the dynamic traits of roots, such as daily root growth rate and branching time of primordia. Results showed a decrease in root apex diameter, an increase in root growth rate, and a stable root branching density in hydroponic culture versus in soil cultivation. These results demonstrated the effects of changes in growing conditions on root system structure of the Solanaceae family.
Keywords: Capsicum, hydroponic culture, root branching, root growth, Solanum

Tóm tắt

Một nghiên cứu phân tích so sánh các đặc điểm cấu trúc hệ rễ trên 31 giống thuộc 3 nhóm quan trọng (cà tím, ớt và cà chua) của họ Cà trồng thủy canh so với trồng trong đất. Những đặc điểm định lượng thu được chủ yếu từ việc đo đạc trên hình ảnh có độ phân giải cao của các bộ phận khác nhau của cây. Thủy canh đã giúp quan sát một cách chính xác các đặc điểm linh động của rễ như: tốc độ sinh trưởng hàng ngày và thời gian hình thành rễ nhánh của mầm rễ. Phân tích chỉ ra rằng: đường kính đỉnh rễ giảm, tốc độ sinh trưởng rễ tăng nhưng mật độ rễ nhánh lại ổn định trong thủy canh so với trong đất. Những kết quả nghiên cứu này chỉ ra ảnh hưởng của việc thay đổi điều kiện trồng trọt đến cấu trúc hệ rễ.
Từ khóa: Capsicum, phân nhánh của rễ, sinh trưởng của rễ, Solanum, thủy canh

Article Details

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