Experimental comparison of two methods to study barley responses to partial submergence

Plant Methods

Tomás Byrne¹  Susanne Barth¹  Alexandra Miricescu²  Catherine M. Doorly³  Emmanuelle Graciet³  Carl K. Y. Ng⁴ 

[1] Crop Science Department, Teagasc Crops, Environment and Land Use Program, R93XE12, Oak Park, Carlow, Ireland;Department of Biology, Maynooth University, Maynooth, Kildare, Ireland;Department of Biology, Maynooth University, Maynooth, Kildare, Ireland;Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Kildare, Ireland;School of Biology and Environmental Science, Centre for Plant Science, UCD Earth Institute, O’Brien Centre for Science West, University College Dublin, D04 N2E5, Belfield, Dublin, Ireland;

关键词: Barley;    Waterlogging;    Screening;    Crop improvement;   

DOI  :  10.1186/s13007-021-00742-5

来源: Springer

【 摘 要 】

BackgroundCrop yield is dependent on climate conditions, which are becoming both more variable and extreme in some areas of the world as a consequence of global climate change. Increased precipitation and flooding events are the cause of important yield losses due to waterlogging or (partial) submergence of crops in the field. Our ability to screen efficiently and quickly for varieties that have increased tolerance to waterlogging or (partial) submergence is important. Barley, a staple crop worldwide, is particularly sensitive to waterlogging. Screening for waterlogging tolerant barley varieties has been ongoing for many years, but methods used to screen vary greatly, from the type of soil used to the time at which the treatment is applied. This variation makes it difficult to cross-compare results.ResultsHere, we have devised a scoring system to assess barley tolerance to waterlogging and compare two different methods when partial submergence is applied with either water or a starch solution at an early developmental stage, which is particularly sensitive to waterlogging or partial submergence. The use of a starch solution has been previously shown to result in more reducing soil conditions and has been used to screen for waterlogging tolerance.ConclusionsOur results show that the two methods provide similar results to qualitatively rank varieties as tolerant or sensitive, while also affecting plants differently, in that application of a starch solution results in stronger and earlier symptoms than applying partial submergence with water.

【 授权许可】

CC BY