globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.14356
Scopus ID: 2-s2.0-85050908362
The important but weakening maize yield benefit of grain filling prolongation in the US Midwest
Author: Zhu P.; Jin Z.; Zhuang Q.; Ciais P.; Bernacchi C.; Wang X.; Makowski D.; Lobell D.
Source Publication: Global Change Biology
ISSN: 13541013
Publishing Year: 2018
Volume: 24, Issue:10
pages begin: 4718
pages end: 4730
Language: 英语
Keyword: crop growth stages ; crop model ; food security ; global warming ; Maize grain filling prolongation ; satellite data ; US Midwest ; yield benefit
Scopus Keyword: Zea mays
English Abstract: A better understanding of recent crop yield trends is necessary for improving the yield and maintaining food security. Several possible mechanisms have been investigated recently in order to explain the steady growth in maize yield over the US Corn-Belt, but a substantial fraction of the increasing trend remains elusive. In this study, trends in grain filling period (GFP) were identified and their relations with maize yield increase were further analyzed. Using satellite data from 2000 to 2015, an average lengthening of GFP of 0.37 days per year was found over the region, which probably results from variety renewal. Statistical analysis suggests that longer GFP accounted for roughly one-quarter (23%) of the yield increase trend by promoting kernel dry matter accumulation, yet had less yield benefit in hotter counties. Both official survey data and crop model simulations estimated a similar contribution of GFP trend to yield. If growing degree days that determines the GFP continues to prolong at the current rate for the next 50 years, yield reduction will be lessened with 25% and 18% longer GFP under Representative Concentration Pathway 2.6 (RCP 2.6) and RCP 6.0, respectively. However, this level of progress is insufficient to offset yield losses in future climates, because drought and heat stress during the GFP will become more prevalent and severe. This study highlights the need to devise multiple effective adaptation strategies to withstand the upcoming challenges in food security. © 2018 John Wiley & Sons Ltd
Citation statistics:
Document Type: 期刊论文
Appears in Collections:影响、适应和脆弱性

Files in This Item:

There are no files associated with this item.

Affiliation: Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN, United States; Department of Earth System Science, Center on Food Security and the Environment, Stanford University, Stanford, CA, United States; Department of Agronomy, Purdue University, West Lafayette, IN, United States; Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA CNRS UVSQ, Gif-sur-Yvette, France; Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, United States; Global Change and Photosynthesis Research Unit, USDA-ARS, Urbana, IL, United States; UMR 211 Agronomie INRA, Agroparistech, Université Paris-Saclay, Thiverval-Grignon, France

Recommended Citation:
Zhu P.,Jin Z.,Zhuang Q.,et al. The important but weakening maize yield benefit of grain filling prolongation in the US Midwest[J]. Global Change Biology,2018-01-01,24(10)
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zhu P.]'s Articles
[Jin Z.]'s Articles
[Zhuang Q.]'s Articles
Similar articles in Baidu Scholar
[Zhu P.]'s Articles
[Jin Z.]'s Articles
[Zhuang Q.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zhu P.]‘s Articles
[Jin Z.]‘s Articles
[Zhuang Q.]‘s Articles
Related Copyright Policies
所有评论 (0)

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.