Impact of irrigation, nitrogen fertilization, and plant density on stay-green and its effects on agronomic traits in maize.

ABSTRACT:

Introduction

The stay-green (SG) or delayed leaf senescence enables crop plants to maintain their green leaves and photosynthetic capacity for a longer time after flowering. It is considered an important trait in maize breeding, which has contributed to gain in grain yield of modern varieties. It has been also used to improve the tolerance to drought and deficiencies in nitrogen fertilization (NF). However, the objective of this study is to evaluate the influence of water irrigation (WI), NF, and plant density (PD) on SG and the effect of SG on agronomic traits in maize.

Methods

Four SG lines and four non-stay-green (NSG) lines were evaluated in four contrasting environments under two WI, three NF, and two PD levels.

Results and discussion

As expected, the chlorophyll

SUBMITTER: Chibane N 

PROVIDER: S-EPMC11414411 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature