“Influence of Polyethylene Glycol (PEG 6000) Generate Osmotic Stress on Seed Germination of Different Wheat (Triticum aestivum L.) Genotypes”

Authors

Aamir Ali Abro
Department of Plant Breeding and Genetics, Faculty of Crop Production, Sindh Agriculture University, Tandojam, 70060 Sindh Pakistan.
State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, China.

Sayed Abdul Akher
Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao, Shandong 266101, China.

Shabana Memon
Department of Plant Breeding and Genetics, Faculty of Crop Production, Sindh Agriculture University, Tandojam, 70060 Sindh Pakistan.

Md. Nurul Huda
Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China.

Shoukat Ali Abro
Department of Soil Sciences, Faculty of Crop Production, Sindh Agriculture University, Tandojam, 70060 Sindh Pakistan.

Shamima Naznin
Department of Plant Pathology, Hajee Mohammad Danesh Science and Technology University, Dinajpur 5200, Bangladesh.

Tanzim Jahan
Department of Genetics and Plant Breeding, Faculty of Agriculture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.

Abstract

The yield of most crops relies on the intensity of drought and the stage of plant growth period where it occurs. The crop growth stage as seed germination is very sensitive to water deficit. To evaluate and observe the effects of polyethylene glycol on seed germination in six wheat (Triticum aestivum L.) genotypes is our primary objective. Wheat genotypes (cv. IBWSN-1010, IBWSN-1025, TD-1, ESW-9525, Khirman, and Chakwal-86) were screened for their response at the seedling stage under different water stress treatments (control 0.0, T1 -0.5, T2 -0.75, and T3 -1.0 MPa) in laboratory conditions. The results revealed that genotype Khirman showed the best performance for radicle length, coleoptile potassium (K+) %, radicle potassium (K+) %, and radicle calcium(Ca2+) % whereas, Chakwal-86 showed the maximum seed germination and coleoptile length under the highest osmotic stress levels (-1.0MPa). Among the tested genotypes, Khirman and Chakwal-86 exhibited the best performance, whereas,TD-1, ESW-9525, and IBWSN-1025 showed moderately tolerant under water stress conditions. The genotype with improved traits may be used as parents in wheat breeding for drought conditions. We concluded that the findings may be helpful and fruitful for the selection of drought stress in wheat under the deliberated traits.