Drought tolerance in popular sunflower hybrids at seedling stage

H G PRAVEEN; T K NAGARATHNA; Y A NANJA REDDY

doi:10.56093/ijas.v91i5.112984

Authors

H G PRAVEEN University of Agricultural Sciences, GKVK, Bengaluru 560 065, India
T K NAGARATHNA Protection of Plant Varieties and Farmers Rights Authority, Ministry of Agriculture and Farmers Welfare, Government of India, NASC Complex, New Delhi
Y A NANJA REDDY University of Agricultural Sciences, GKVK, Bengaluru 560 065, India

https://doi.org/10.56093/ijas.v91i5.112984

Keywords:

Osmotic stress, Recovery growth, Seedling survival, TIR approach

Abstract

Drought is a major abiotic stress coupled with high temperature that limits the crop productivity in arid and semi-arid regions. Productivity of sunflower under moisture stress is primarily determined by seed germination and the seedling vigour for appropriate crop stand. Screening hybrids for moisture stress and high-temperature tolerance under field condition has uncertainties of uncontrolled environmental conditions and interaction of biotic and other abiotic stresses. Hence, in the present experiment, 17 popular hybrids were evaluated for moisture stress tolerance at the seedling stage using PEG-induced osmotic stress and; for high-temperature tolerance using temperature induction response (TIR) technique. The study revealed that root growth was affected higher as compared to the shoot growth in both the experiments. The shoot growth was affected higher due to high temperature as compared to the PEGinduced stress. The hybrids NDSH-1012, PSH-1962, RSFH-130, and GK-202 were tolerant to PEG induced moisture stress while, the hybrids KBSH-41, KBSH-44, KBSH-53, and SB-207 were tolerant to high temperature-induced stress. The hybrids, DRSH-1, KBSH-1 and GK-2009 were moderately tolerant for both the stresses. These hybrids are suitable for drought tolerance at seedling level. This study concludes that the evaluation of hybrids for combined stresses (drought and high temperature) would be appropriate than the individual stress in sunflower. Furthermore, hybrids tolerant to stresses at seedling level should be evaluated at later growth stages for confirmation of drought/ heat tolerance and suitable for rainfed cultivation.

Downloads

Download data is not yet available.

References

Amrutha R, Muthulaksmi S, Baby Rani W, Indira and Mareeswari P. 2007. Physiological studies on evaluation of sunflower (Helianthus annuus L.) genotypes for high-temperature stress. Research Journal of Agriculture and Biological Sciences 3(4): 245-51.

Anjum S A, Xie X Y, Wang L C, Saleem M F, Man C and Lei W. 2011. Morphological, physiological, and biochemical responses of plants to drought stress. African Journal of Agricultural Research 6(9): 2026-32.

Claeys H and Inze D. 2013. The agony of choice: How plants balance growth and survival under water-limiting conditions. Plant Physiology 162(4): 1768-79.

Geetha A, Sivasankar A, Lakshmi Prayaga, Suresh J and Saidaiah P. 2012. Screening of sunflower genotypes for drought tolerance under laboratory conditions using PEG. Sabrao Journal of Breeding Genetics 44(1): 28-4.

ISTA 1996. International rules for seed testing. Seed Science and Technology 13: 299-513

Ivanova R V, Shtereva L, Kraptchev B and Karceva T. 2014. Response of sunflower (Helianthus annuus L) genotypes to PEG-mediated water stress. Central European Journal of Biology 9(12): 1206-14

Kaya M D, Okcu G, Atak M, Cikil Y and Kolsarici O. 2006. Seed treatments to overcome salt and drought stress during germination in sunflower (Helianthus annuus L.). European Journal of Agronomy 24: 291-95.

Kulkarni M and Deshpande U. 2007. In vitro screening of tomato genotypes for drought resistance using polyethylene glycol. African Journal of Biotechnology 6: 691-96.

Praveen H G, Nagarathna T K and Nanja Reddy Y A. 2020. Root length and leaf cuticular wax: The traits associated with drought avoidance in sunflower hybrids. International Journal of Chemical Studies 8(4): 2588-93.

Rauf S and Sadaqat H A. 2008. Identification of physiological traits and genotypes combined to high achene yield in sunflower (Helianthus annuus L.) under contrasting water regimes. Australian Journal of Crop Science 1(1): 23-30.

Razzaq H, Tahir H N, Sadaqat H A and Sadia B. 2015. Genetic variability in sunflower accessions for achene yield and its related traits in sunflower. International Journal of Science and Nature 5: 669-76.

Razzaq H, Tahir H N, Sadaqat H A and Sadia B. 2017. Screening of sunflower (Helianthus annuus L.) accessions under drought stress conditions, an experimental assay. Journal of Soil Science and Plant Nutrition 17(3): 662-71.

Senthilkumar M, Srikanthbabu V, Mohan Raju B, Ganeshkumar, Shivaprakash N and Udayakumar M. 2003. Screening of inbred lines to develop a thermotolerant sunflower hybrid using the temperature induction response (TIR) technique: a novel approach by exploiting residual variability. Journal of Experimental Botany 392(54): 2569-78.

Sheoran O P, Tonk D S, Kaushik L S, Hasija R C and Pannu R S. 1998. Statistical software package for agricultural research workers. Recent advances in information theory, statistics & computer applications, Departmentof Mathematics & Statistics, CCS HAU, Hisar, 139-43.

USDA. 2020. United States Department of Agriculture, Foreign Agricultural Service Circular Series WAP, 2020. World Agricultural Production, pp 1-20.