PRODUCTION RISK AND THE EVOLUTION OF VARIETAL TECHNOLOGY

被引：48

作者：

TRAXLER, G ^{[1
]}

FALCKZEPEDA, J ^{[1
]}

ORTIZMONASTERIO, JI ^{[1
]}

SAYRE, K ^{[1
]}

机构：

[1] INT MAIZE & WHEAT IMPROVEMENT CTR, MEXICO CITY, MEXICO

来源：

AMERICAN JOURNAL OF AGRICULTURAL ECONOMICS | 1995年 / 77卷 / 01期

关键词：

GENETIC IMPROVEMENT; JUST-POPE PRODUCTION FUNCTION; POST-GREEN REVOLUTION; TECHNICAL CHANGE;

D O I：

10.2307/1243883

中图分类号：

F3 [农业经济];

学科分类号：

0202 ; 020205 ; 1203 ;

摘要：

A Just-Pope production function is used to estimate the effect of genetic improvement on the first two moments of wheat yield for the period 1950-86. The model characterizes the green revolution as the culmination of an era in which wheat breeders achieved rapid increases in yield potential accompanied by higher yield variances. To date, the post-green revolution has been an era of slower mean yield growth, but of relatively rapid improvement in yield stability. Overall, the analysis indicates steady progress in producing ''better'' varieties; successive releases have improved either stability, mean yield, or both.

引用

页码：1 / 7

页数：7

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