Resistance of Multiple Diploid and Tetraploid Perennial Ryegrass (Lolium perenne L.) Varieties to Three Projected Drought Scenarios for the UK in 2080

被引:14
|
作者
Lee, Mark A. [1 ]
Howard-Andrews, Victoria [2 ]
Chester, Michael [1 ]
机构
[1] Royal Bot Gardens Kew, Nat Capital & Plant Hlth, Richmond TW9 3DS, Surrey, England
[2] Univ Southampton, Sch Biol Sci, Southampton SO17 1BJ, Hants, England
来源
AGRONOMY-BASEL | 2019年 / 9卷 / 03期
关键词
biomass; drought tolerance; forage; nutrition; polyploidy; productivity; traits; ROOT; TOLERANCE;
D O I
10.3390/agronomy9030159
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Forage plants underpin the livestock industry. Selective breeding, including polyploidization, where genome size is increased by whole genome duplication, changes the productivity and stress tolerance of new varieties. We conducted a growth chamber experiment to investigate the likely responses of Lolium perenne L. to drought, testing four diploid and four tetraploid varieties. We simulated projected spring and summer temperatures for the South-West of England in 2080, applying three projected rainfall scenarios, which varied in drought severity. Drought caused a reduction in productivity, but there was substantial variation between varieties (up to 82%), with the optimal variety changing depending on drought severity. Across three harvests, productivity declined by 43% and 27% (dry biomass) for the severe and likely drought scenarios, respectively. In the final harvest, tetraploids exhibited a greater biomass under severe drought, whereas diploids had a greater biomass under the current rainfall and likely drought scenarios. Longer stomata were observed in tetraploids; however, stomatal conductance was not significantly different between ploidy levels. Trait selection will be important for future drought adaptation. Local climate projections will need to be consulted when selecting L. perenne varieties to tolerate the spatially variable reductions in future rainfall.
引用
收藏
页数:7
相关论文
共 50 条
  • [31] Intake stimulants in perennial ryegrass (Lolium perenne L.) fed to sheep
    Dohi, H
    Yamada, A
    Fukukawa, T
    JOURNAL OF DAIRY SCIENCE, 1997, 80 (09) : 2083 - 2086
  • [32] GROWTH-CHARACTERISTICS OF CONTRASTING VARIETIES OF PERENNIAL RYEGRASS (LOLIUM-PERENNE L)
    TAUBE, F
    JOURNAL OF AGRONOMY AND CROP SCIENCE, 1990, 165 (2-3) : 159 - 170
  • [33] Differential contribution of avoidance and tolerance to dehydration resistance in populations of perennial ryegrass, Lolium perenne L.
    Sugiyama, S
    Nikara, C
    AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH, 2004, 55 (01): : 33 - 37
  • [34] Introduction of a self-compatible gene of Lolium temulentum L. to perennial ryegrass (Lolium perenne L.) for the purpose of the production of inbred lines of perennial ryegrass
    Toshihiko Yamada
    Euphytica, 2001, 122 : 213 - 217
  • [35] Introduction of a self-compatible gene of Lolium temulentum L. to perennial ryegrass (Lolium perenne L.) for the purpose of the production of inbred lines of perennial ryegrass
    Yamada, T
    EUPHYTICA, 2001, 122 (02) : 213 - 217
  • [36] Dissection of RNA-mediated ryegrass mosaic virus resistance in fertile transgenic perennial ryegrass (Lolium perenne L.)
    Xu, JP
    Schubert, J
    Altpeter, F
    PLANT JOURNAL, 2001, 26 (03): : 265 - 274
  • [37] Plant vigour at establishment and following defoliation are both associated with responses to drought in perennial ryegrass (Lolium perenne L.)
    Hatier, Jean-Hugues B.
    Faville, Marty J.
    Hickey, Michael J.
    Koolaard, John P.
    Schmidt, Jana
    Carey, Brandi-Lee
    Jones, Chris S.
    JOURNAL OF EXPERIMENTAL BOTANY, 2014, 65 (20) : 5823 - 5834
  • [38] Physiological and transcriptional status of genetically diverse perennial ryegrass (Lolium perenne L.) populations under drought stress
    Demirkol, Gurkan
    Felek, Anil Firat
    Asci, Ozlem Onal
    Yilmaz, Nuri
    PLANT GENETIC RESOURCES-CHARACTERIZATION AND UTILIZATION, 2023, 21 (04): : 331 - 339
  • [39] A comparative study of molecular and morphological methods of describing relationships between perennial ryegrass (Lolium perenne L.) varieties
    I. Roldán-Ruiz
    F.A. van Euwijk
    T. J. Gilliland
    P. Dubreuil
    C. Dillmann
    J. Lallemand
    M. De Loose
    C. P. Baril
    Theoretical and Applied Genetics, 2001, 103 : 1138 - 1150
  • [40] A comparative study of molecular and morphological methods of describing relationships between perennial ryegrass (Lolium perenne L.) varieties
    Roldán-Ruiz, I
    van Eeuwijk, FA
    Gilliland, TJ
    Dubreuil, P
    Dillmann, C
    Lallemand, J
    De Loose, M
    Baril, CP
    THEORETICAL AND APPLIED GENETICS, 2001, 103 (08) : 1138 - 1150