Nghiên cứu sự thích ứng của 4 giống/dòng lúa (Oryza sativa L.) trong điều kiện khô hạn nhân tạo giai đoạn sinh dưỡng

0 Người đánh giá. Xếp hạng trung bình 0

Tác giả: Thị Bích Vân Nguyễn, Công Thành Võ

Ngôn ngữ: vie

Ký hiệu phân loại: 634.117 Orchards, fruits, forestry

Thông tin xuất bản: Khoa học & Công nghệ Việt Nam, 2018

Mô tả vật lý: 32-37

Bộ sưu tập: Metadata

ID: 536584

Thêm vào giỏ

Tóm tắt
Chủ đề

Nghiên cứu được tiến hành nhằm tìm hiểu sự thích ứng về biểu hiện sinh hóa của 4 giống/dòng lúa đến ứng trong điều kiện hạn giai đoạn sinh dưỡng. Thí nghiệm được bố trí theo kiểu thừa số hai nhân tố khối hoàn toàn ngẫu nhiên, nhân tố thứ nhất là 4 giống/dòng IR64, CTUS4, Nàng níu, LH01 (giống IR64 được sử dụng làm đối chứng nhạy cảm với hạn)
nhân tố thứ hai là 2 điều kiện tưới (đủ nước, không tưới nước) với 3 lần lặp lại. Kết quả cho thấy, để thích ứng trong điều kiện hạn, 4 giống/dòng có sự tích lũy cao hàm lượng chlorophyll, đường tổng và proline trong lá. Hàm lượng chlorophyll a tăng từ 1,1-1,6 lần, chlorophyll b tăng từ 1,2-1,5 lần, chlorophyl tổng tăng từ 1,3-1,4 lần, đường tổng tăng từ 1,2-3 lần, proline tăng từ 2,2-9,5 lần. Hai dòng CTUS4 và LH01 có sự tích lũy hàm lượng đường tổng và proline thấp nhất. Đường tổng và proline có hệ số biến thiên kiểu gen (22%
99,3%), hệ số di truyền (96,1%, 99,8%) cao cho thấy hiệu quả chọn lọc cao đối với khả năng chịu hạn.The study was conducted to understand the biochemical expression of the four rice varieties / lines to adapt to drought conditions. The experiment was arranged in a factor of two completely random block factors, the first is 4 varieties / line IR64, CTUS4, Nang niu, LH01 (IR64 variety used as a control sensitive to drought)
The second factor is 2 conditions of irrigation (enough water, no watering) with 3 replications. The results showed that, to adapt to drought conditions, 4 varieties / lines had a high accumulation of chlorophyll, total sugar and proline in the leaves. Chlorophyll a content increased from 1.1-1.6 times, chlorophyll b increased from 1.2-1.5 times, total chlorophyl increased from 1.3-1.4 times, total sugar increased from 1.2-3. times, proline increased from 2.2 to 9.5 times. CTUS4 and LH01 lines have the lowest accumulation of total sugar and proline. Total and proline sugars have a high coefficient of variation (22%
99.3%) and a high genetic coefficient (96.1%, 99.8%) indicates a high selectivity for drought tolerance.

Tạo bộ sưu tập với mã QR