Wheat yield and grain-filling characteristics due to cultivar replacement in the Haihe Plain in China.

ABSTRACT:

Background

The Haihe Plain plays an important role in wheat production and food security in China and has experienced continuous cultivar replacement since the 1950s.This study assessed the evolution of the yield and grain-filling characteristics of the main winter wheat cultivars in the Haihe Plain over the last seven decades (1950s to date).

Methods

Cultivar characterization indicated that the increase in yield was negatively affected by spike number and positively affected by the number of kernels per spike before the 2000s and kernel weight after the 2000s. Field trials were conducted across two ecological zones over two consecutive wheatgrowing seasons. The results showed that genetic gains in grain yield, spike number, and kernel weight during 1955 to 2021 were 0.629%,

SUBMITTER: Zhang X 

PROVIDER: S-EPMC11260742 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature