Exploring genotypic diversity in sorghum breeding lines for water-saving traits to enhance drought adaptation during the post-rainy season

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Exploring genotypic diversity in sorghum breeding lines for water-saving traits to enhance drought adaptation during the post-rainy season

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Exploring genotypic diversity in sorghum breeding lines for water-saving traits to enhance drought adaptation during the post-rainy season

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40100 - Agriculture, Forestry, and Fisheries

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Crop Science

ISSN

0011-183X

e-ISSN

0011-183X

Svazek periodika

64

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

2630-2651

Kód UT WoS článku

001241163100001

EID výsledku v databázi Scopus

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