THE INFLUENCE OF GENOTYPE AND ENVIRONMENT ON THE FECUNDITY AND FACULTATIVE EXPRESSION OF APOMIXIs IN HIERACIUM PILOSELLA

作者: Gary J. Houliston , Hazel M. Chapman , Ross A. Bicknell

DOI: 10.1007/BF02806477

关键词: FecundityPlant ecologySexual reproductionPollinationGenotypeBotanyHieracium pilosellaApomixisBiologyFacultative

摘要: The potential for sexual reproduction in the facultative apomictHieracium pilosella was determined by pollinating with closely related but morphologically distinctH. aurantiacum. hybrid characteristics of sexually produced progeny were used as markers sex. Crossing carried out under a range environmental treatments to test influence (1) field versus glasshouse conditions, (2) nutrient level and presence pathogen, (3) photoperiod on frequency sex apomicticH. pilosella.

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