Nitrogen Nutrition and Genotype Interactions in Maize

C.Y. Tsai; 蔡家寅

Nitrogen Nutrition and Genotype Interactions in Maize

Other Title

玉米利用不同氮態肥的反應及策略

Journal

雜糧作物生產技術改進研討會專刊

Part Of

農業試驗所特刊第49號

Pages

11-23

Date Issued

1995-05

Date

1995-05

Author(s)

C.Y. Tsai

蔡家寅

URI

https://scholars.tari.gov.tw/handle/123456789/2986

Abstract

Nitrogen (N) is one of the major factors affecting both production efficiency and ground water quality. As the concern over nitrate (NO3-) pollution increases, ammonium (NH4+) nutrition will undoubtedly become more important for crop production, especially when high efficient nitrification inhibitors are being developed as N management tools. However, there is the misgiving that crops may not perform well under NH4+-N. This is a legitimate concern because breeding programs and selections have been conducted under predominantly NO3--N environments which might inadvertently eliminate the trait for NH4+-N utilization. As a first step towards developing varieties capable of performing under NH4+-N, maize is being used as a model system to evaluate the mechanism and efficiency of NH4+ assimilation so that a biochemical selection index can be developed for breed in gprograms. 氮肥是影響作物生產與環境的重要因素，由於社會對於環境污染的關切，今後的作物生產將得借重於目前開發中的第二代硝化抑制劑以減輕硝態氮的污染。銨態氮雖然不致於污染環境，而且理論上它的代謝效率也高，但是一般作物都難以適應較高濃度的銨態氮。這是由於長年的育種工作都在硝態氮環境下進行，導致絕大部分品種利用銨離子之遺傳特性的遺失。為了因應未來的銨態氮生產方式以減輕硝態氮對於環境的污染，乃以玉米為模示探討品種間對於銨態氮的利用能力，尋求生化指標做為今後育種善於利用銨態氮雜交品種的依據，以解決作物生產力與環境污染的衝突。

Event(s)

雜糧作物生產技術改進研討會

The Improvement of Production Technology of Upland Crops in Taiwan

Publisher

農業試驗所

Type

conference paper

File(s)

Name

publication_no49-6.pdf

Size

1.1 MB

Format

Adobe PDF

Checksum

(MD5):1084c50a2cce4b3411ad60a2eaac4416