J 2024

Monitoring Drought Tolerance Mechanisms of Sorghum and Maize Under Unevenly Distributed Precipitation

FRANTOVÁ, Nicole, Michal RÁBEK, Lenka PORČOVÁ, Ivana JOVANOVIĆ, Petr ŠIRŮČEK et. al.

Základní údaje

Originální název

Monitoring Drought Tolerance Mechanisms of Sorghum and Maize Under Unevenly Distributed Precipitation

Autoři

FRANTOVÁ, Nicole, Michal RÁBEK, Lenka PORČOVÁ, Ivana JOVANOVIĆ, Petr ŠIRŮČEK, Vojtěch LUKAS, Josef HÁJEK (203 Česká republika, domácí), Petr ELZNER, Ludmila HOLKOVÁ, Pavlína SMUTNÁ, Vladimír SMUTNÝ, Tomáš STŘEDA a Radim CERKAL

Vydání

International Journal of Plant Production, Springer, 2024, 1735-6814

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

40106 Agronomy, plant breeding and plant protection;

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Impakt faktor

Impact factor: 2.500 v roce 2022

Organizační jednotka

Přírodovědecká fakulta

UT WoS

001160584500001

Klíčová slova anglicky

Water limitation; VCI; Rain distribution; Maize; Sorghum; RWC; Proline; Stomatal density

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 16. 4. 2024 15:49, Mgr. Marie Šípková, DiS.

Anotace

V originále

The study examines the morpho-physiological differences in leaf characteristics between two species of C4 plants: sorghum and maize. The research was conducted in field conditions where plants were rainfed. Both species different varieties were cultivated at two distinct sites that exhibited variations in soil texture and drought stress incidence according to the vegetation condition index (VCI). Samples were collected during various growth stages to analyze the relative water content (RWC), proline levels, and stomatal density. Sorghum plants displayed higher RWC, proline levels, and stomatal density than maize plants. In sorghum, the biochemical traits, such as the proline content, may play a more critical role in withstanding water-limited conditions than in maize in our experiment. Under the same water restriction period, sorghum showed higher RWC levels. Sorghum plants reduced stomatal density under more water-limited conditions, which proves its plasticity. Additionally, early maturation played a crucial role in both species. The early sorghum variety KWS Kallisto and maize variety Walterinio KWS had a more stable yield at both sites. Nevertheless, the highest yields were found in the later varieties, KWS Hannibal and KWS Inteligens. The higher proline levels and the relative water content are drought-tolerant mechanisms and may be used to indicate drought intensity in field conditions. Our findings spotlight the influence of genetic diversity and genotype-environment interactions in determining crop responses to drought stress, providing valuable information for future breeding programs to enhance drought tolerance in crops.