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Pollen Viability an Index of Abiotic Stresses Tolerance and Methods for the Improved Pollen Viability

Pollen Viability an Index of Abiotic Stresses Tolerance and Methods for the Improved Pollen Viability

Muhammad Khuram Razzaq1,2*, Saeed Rauf1, Mohsin Khurshid3, Shahid Iqbal1,4, Javaid Akhter Bhat2, Ayaz Farzand5, Adeel Riaz1,6, Guangnan Xing2 and Junyi Gai


1Department of Plant Breeding and Genetics, University College of Agriculture, University of Sargodha, Pakistan; 2Soybean Research Institute, National Centre for Soybean Improvement, Nanjing Agricultural University, China; 3College of Allied Health Professionals, Directorate of Medical Sciences, Government College University, Faisalabad, Pakistan; 4Laboratory of Fruit Tree Biotechnology, College of Horticulture, Nanjing Agricultural University, Nanjing, China; 5Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan; 6Biotechnology Research Institute, Chinese Academy of Agricultural Sciences Beijing, 100081 China. 


Pollen represents the substantial stage in plants and fertile pollen are important for proficient plant reproduction. Abiotic stresses reduce the photosynthates production, thus genotypes also reduce the reserve mobilization for tapetum cells which induce the significant reduction in pollen fertility. Therefore, pollen fertility index can be exploited to discriminate resistant and susceptible genotypes under abiotic stresses. High heritability in the segregating generation warrants good selection response. Moreover, magnitude and type of genetic variation associated with pollen viability also important in improving the trait and breeding procedures to be adapted for the improvement of trait per se. Genetic studies results under heat stress in sunflower showed additive to partial dominance towards higher pollen viability in the inheritance showing that trait can be improved through selection in segregating generations. In this review, we have mainly considered the effect of abiotic stresses on pollen viability, selection and methods for the improved pollen viability and the management of heat stress.  


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Pakistan Journal of Agricultural Research


Vol. 34, Iss. 3, Pages 394-671


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