Crop Adaptation: Weedy and Crop Wild Relatives as an Untapped Resource to Utilize Recent Increases in Atmospheric CO<sub>2</sub>

Adaptation measures are necessary to ensure the stability and performance of the food supply relative to anthropogenic climate change. Although a wide range of measures have been proposed (e.g., planting dates, crop choices, drought resistance), there may be a ubiquitous means to increase productivi...

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Main Author: Lewis H. Ziska
Format: Article
Language:English
Published: MDPI AG 2021-01-01
Series:Plants
Subjects:
Online Access:https://www.mdpi.com/2223-7747/10/1/88
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author Lewis H. Ziska
author_facet Lewis H. Ziska
author_sort Lewis H. Ziska
collection DOAJ
description Adaptation measures are necessary to ensure the stability and performance of the food supply relative to anthropogenic climate change. Although a wide range of measures have been proposed (e.g., planting dates, crop choices, drought resistance), there may be a ubiquitous means to increase productivity relatively quickly. Numerous studies have shown that the projected increase in atmospheric CO<sub>2</sub> can stimulate crop growth and seed yield with noted intra-specific differences within crop cultivars, suggesting potential differences to CO<sub>2</sub> that could be exploited to enhance seed yield in the future. However, it is worth emphasizing that atmospheric CO<sub>2</sub> has already risen substantially (≈27% since 1970) and that, at present, no active effort by breeders has been made to select for the CO<sub>2</sub> increase that has already occurred. In contrast, for weedy or crop wild relatives (CWR), there are indications of evolutionary adaptation to these recent increases. While additional steps are needed, the identification and introgression of these CO<sub>2</sub>-sensitive traits into modern crop cultivars may be a simple and direct means to increase crop growth and seed yield.
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spelling doaj.art-dcf9d50490ce4282872a96ce667f762e2023-11-21T08:05:21ZengMDPI AGPlants2223-77472021-01-011018810.3390/plants10010088Crop Adaptation: Weedy and Crop Wild Relatives as an Untapped Resource to Utilize Recent Increases in Atmospheric CO<sub>2</sub>Lewis H. Ziska0Mailman School of Public Health, Columbia University, New York, NY 10032, USAAdaptation measures are necessary to ensure the stability and performance of the food supply relative to anthropogenic climate change. Although a wide range of measures have been proposed (e.g., planting dates, crop choices, drought resistance), there may be a ubiquitous means to increase productivity relatively quickly. Numerous studies have shown that the projected increase in atmospheric CO<sub>2</sub> can stimulate crop growth and seed yield with noted intra-specific differences within crop cultivars, suggesting potential differences to CO<sub>2</sub> that could be exploited to enhance seed yield in the future. However, it is worth emphasizing that atmospheric CO<sub>2</sub> has already risen substantially (≈27% since 1970) and that, at present, no active effort by breeders has been made to select for the CO<sub>2</sub> increase that has already occurred. In contrast, for weedy or crop wild relatives (CWR), there are indications of evolutionary adaptation to these recent increases. While additional steps are needed, the identification and introgression of these CO<sub>2</sub>-sensitive traits into modern crop cultivars may be a simple and direct means to increase crop growth and seed yield.https://www.mdpi.com/2223-7747/10/1/88adaptationbreedingCO<sub>2</sub>CWRseed yield
spellingShingle Lewis H. Ziska
Crop Adaptation: Weedy and Crop Wild Relatives as an Untapped Resource to Utilize Recent Increases in Atmospheric CO<sub>2</sub>
Plants
adaptation
breeding
CO<sub>2</sub>
CWR
seed yield
title Crop Adaptation: Weedy and Crop Wild Relatives as an Untapped Resource to Utilize Recent Increases in Atmospheric CO<sub>2</sub>
title_full Crop Adaptation: Weedy and Crop Wild Relatives as an Untapped Resource to Utilize Recent Increases in Atmospheric CO<sub>2</sub>
title_fullStr Crop Adaptation: Weedy and Crop Wild Relatives as an Untapped Resource to Utilize Recent Increases in Atmospheric CO<sub>2</sub>
title_full_unstemmed Crop Adaptation: Weedy and Crop Wild Relatives as an Untapped Resource to Utilize Recent Increases in Atmospheric CO<sub>2</sub>
title_short Crop Adaptation: Weedy and Crop Wild Relatives as an Untapped Resource to Utilize Recent Increases in Atmospheric CO<sub>2</sub>
title_sort crop adaptation weedy and crop wild relatives as an untapped resource to utilize recent increases in atmospheric co sub 2 sub
topic adaptation
breeding
CO<sub>2</sub>
CWR
seed yield
url https://www.mdpi.com/2223-7747/10/1/88
work_keys_str_mv AT lewishziska cropadaptationweedyandcropwildrelativesasanuntappedresourcetoutilizerecentincreasesinatmosphericcosub2sub