旱稻在生长后期通过早期从初始干旱胁迫中恢复来逃避干旱

IF 1.6 3区 农林科学 Q2 AGRONOMY
Y. Nakao, M. Yoshino, K. Miyamoto, S. Yabuta, Rieko Kamioka, Keisuke Hatanaka, J. Sakagami
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引用次数: 1

摘要

摘要本研究通过田间试验和调节土壤水分的容器实验,研究了土壤水分条件与种子启动在2年(2017–2018)的初期和后期生长之间的相互作用。在东非乌干达的旱地旱地稻田上进行了田间试验,在那里种植了三份预处理种子和对照种子并进行了栽培。2017年,在启动处理中,山丘的第一次抽穗(头出现)的百分比更高,20%的山丘实现第一次抽穗的时间(H20)明显早于对照。此外,粒比(可育粒数与不育粒数)与H20呈负相关(P<0.05)。然而,在2018年的情况下,对照和启动之间的生长参数没有差异。结果表明,在一定条件下,引发可以缩短生长期,提高抗旱性。因此,我们研究了在土壤水分处理下对初始生长的启动效应与在淹水条件下的后续发育之间的关系。在转移到积水条件下后,最初在低土壤湿度条件下生长的引发种子的植物比对照植物更早恢复。我们的研究得出结论,水培对陆稻的农艺影响通过早期恢复阻止了干旱条件下植物的长期生长。此外,它还可以减少生长后期因降雨量减少而造成的产量损失。图形摘要
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Drought escape during the late growth stage through early recovery from initial drying stress by hydropriming of upland rice
ABSTRACT This study investigated the interactions between soil moisture conditions and seed priming on initial and late growth over 2 years (2017–2018) through field trials and container experiments with regulated soil moisture. Field trials were conducted on rainfed upland rice fields in Uganda, East Africa, where primed and control seeds were planted in triplicate and cultivated. In 2017, the percentage of first heading (head emergence) of hills was higher in priming treatments, and the time for 20% of the hills to achieve the first heading (H20) was significantly earlier than in controls. Additionally, grain ratio (number of fertile grains to sterile grains) and H20 were negatively correlated (P < 0.05). However, the difference in growth parameters between control and priming was not found in the case of 2018. The results suggested that priming reduces the growth period under certain conditions and improves drought escape. Therefore, we investigated the relationship between priming effects on initial growth under soil moisture treatments and subsequent development under waterlogged conditions. After transfer to waterlogged conditions, plants of the primed seeds initially grown in low soil moisture conditions recovered earlier than control plants. Our research concludes that the agronomical impact of hydropriming on upland rice prevents prolonged plant growth under drought by early recovery. Furthermore, it could decrease the yield loss caused by reduced rainfall in the late growth stage. Graphical abstract
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来源期刊
Plant Production Science
Plant Production Science 农林科学-农艺学
CiteScore
5.10
自引率
4.00%
发文量
27
审稿时长
>36 weeks
期刊介绍: Plant Production Science publishes original research reports on field crops and resource plants, their production and related subjects, covering a wide range of sciences; physiology, biotechnology, morphology, ecology, cropping system, production technology and post harvest management. Studies on plant production with special attention to resource management and the environment are also welcome. Field surveys on cropping or farming system are also accepted. Articles with a background in other research areas such as soil science, meteorology, biometry, product process and plant protection will be accepted as long as they are significantly related to plant production.
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