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<p>Compared with other cereals, rye (<i>Secale cereale</i> L.) has traits that contribute to superior drought tolerance, thus making it a suitable alternative under intensifying droughts related to climate change. The distributions of these traits across a range of varieties and their relationships with yield potential have yet to be fully elucidated. Therefore, the sensitivity of 20 varieties, which differ in origin and age, to drought stress between the second half of stem elongation and the beginning of grain filling was analyzed. Potted plants were exposed to drought on an automated phenotyping platform, enabling accurate simulation of water loss for all varieties. Soil moisture was reduced to 30% of the soil water capacity, followed by rewetting. Although traditional varieties exhibited greater stability of key yield components under drought stress, modern varieties achieved higher absolute yields under both drought and well-watered conditions. Therefore, traditional varieties cannot replace modern varieties but remain valuable donors of drought resistance traits.</p>

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Traditional rye varieties exhibit drought tolerance traits but maintain lower yields than modern varieties under drought stress

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月5日

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  • Marcela Hlaváčová,
  • Karel Klem,
  • Jaromír Pytela,
  • Otmar Urban,
  • Natálie Pernicová,
  • Jan Balek,
  • Daniela Semerádová,
  • Milan Fischer,
  • Reimund P. Rötter,
  • Mercy Appiah,
  • Petr Hlavinka,
  • Vladimíra Horáková,
  • Petr Škarpa,
  • Miroslav Trnka

摘要

Compared with other cereals, rye (Secale cereale L.) has traits that contribute to superior drought tolerance, thus making it a suitable alternative under intensifying droughts related to climate change. The distributions of these traits across a range of varieties and their relationships with yield potential have yet to be fully elucidated. Therefore, the sensitivity of 20 varieties, which differ in origin and age, to drought stress between the second half of stem elongation and the beginning of grain filling was analyzed. Potted plants were exposed to drought on an automated phenotyping platform, enabling accurate simulation of water loss for all varieties. Soil moisture was reduced to 30% of the soil water capacity, followed by rewetting. Although traditional varieties exhibited greater stability of key yield components under drought stress, modern varieties achieved higher absolute yields under both drought and well-watered conditions. Therefore, traditional varieties cannot replace modern varieties but remain valuable donors of drought resistance traits.