Exploring genotypic diversity in sorghum breeding lines for water-saving traits to enhance drought adaptation during the post-rainy season
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41110%2F24%3A101112" target="_blank" >RIV/60460709:41110/24:101112 - isvavai.cz</a>
Result on the web
<a href="https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/csc2.21285" target="_blank" >https://acsess.onlinelibrary.wiley.com/doi/full/10.1002/csc2.21285</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/csc2.21285" target="_blank" >10.1002/csc2.21285</a>
Alternative languages
Result language
angličtina
Original language name
Exploring genotypic diversity in sorghum breeding lines for water-saving traits to enhance drought adaptation during the post-rainy season
Original language description
Sorghum [Sorghum bicolor (L.) Moench], a crucial staple crop in South Asia and sub-Saharan Africa, faces challenges amid increasing climate variability. Post-rainy sorghum serves as a dominant food and fodder crop in India. Aligned with International Crops Research Institute for the Semi-Arid Tropics's post-rainy sorghum product profile, this research extensively characterizes sorghum lines, emphasizing the traits vital for post-rainy drought adaptation in hybrid parents. We examined genotypic differences and trait correlations in 25 sorghum hybrid parents and varieties (B line for seed parent, R line for restorer, and check for varieties) through atmospheric and soil drought experiments. Results from atmospheric drought experiments revealed significant variation in transpiration rate (TR) under high vapor pressure deficit (VPD), with certain lines showing limited TR (BTX623 and ICSR 21002), while others exhibited high TR. In soil drought experiments, transpiration decline occurred at fractions of transpirable soil water ranging between 0.38 (ICSR 174) and 0.65 (40162 and ICSR 21005). R lines consistently displayed superior plant growth, water use, and biomass compared to B lines. Transpiration efficiency (TE) and total biomass showed positive correlations (r2 = 0.69) in well-watered and (r2 = 0.45) in water-stressed conditions. Most R lines displayed higher biomass and TE. Genotypes exhibiting enhanced vigor and limited TR in high VPD conditions and high TE hold potential for enhancing drought adaptation in post-rainy sorghum. Notably, genotypes with higher biomass, lower TR, and increased TE within both R and B line groups represent valuable genetic resources for enhancing sorghum crops, post-rainy sorghum adaptation to water deficit. Post-rainy sorghum cultivation in India is vital and aligns with ICRISAT's product profile. Water conservation traits (e.g., limited transpiration rate [TR]) optimize yield under water deficit by maximizing water capture and use. We observed significant variation in TR, NTR-FTSW (normalized transpiration ratio-fraction of transpirable soil water) thresholds, and transpiration efficiency (TE), crucial for drought adaptation. R lines consistently showed better plant growth, higher biomass, and TE, compared to B lines. Promising sorghum genotypes, with enhanced vigor and improved TE, offer for post-rainy drought adaptation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
40100 - Agriculture, Forestry, and Fisheries
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Crop Science
ISSN
0011-183X
e-ISSN
0011-183X
Volume of the periodical
64
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
22
Pages from-to
2630-2651
UT code for WoS article
001241163100001
EID of the result in the Scopus database
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