Effect of temperature on fertility restoration and appearance of spots on the perianth in male-sterile lily cultivar 'Akita petit white'

• Published in: Engeigaku kenkyuu Vol. 8; no. 2; pp. 155 - 159
• Main Authors: Sato, T.(Akita-ken. Agriculture, Forestry and Fisheries Research Center (Japan). Agricultural Experiment Station), Shibata, H, Arino, K, Kudo, H, Mato, M, Yamagata, A, Miyoshi, K
• Format: Journal Article
• Language: English; Japanese
• Published: Kyoto-City THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE 01.04.2009; Japan Science and Technology Agency
• Subjects: ANTERA; anther; ANTHERE; ANTHERS; CUT FLOWERS; ESTERILIDAD MASCULINA; FLEUR COUPEE; FLOR CORTADA; INFERTILITE MALE; LILIUM; MALE INFERTILITY; spots on perianth; stamen; TEMPERATURA; TEMPERATURE
• ISSN: 1347-2658; 1880-3571
• DOI: 10.2503/hrj.8.155

An Asiatic hybrid lily 'Akita petit white' was selected from a cross between 'Mont Blanc' and 'Apollo'. It is male-sterile with antherless stamens. In a field trial designed to extend the duration in order to allow year-round shipping, the antherless phenotype was stable when planted in December and May, allowing the harvesting cut flowers in April and July, respectively. However, these antherless stamens showed restoration of anthers under retarded flowering conditions in a green house in July. We demonstrated that the antherless stamens were restored to intact anthers in response to high temperature in summer. 'Akita petit white' showed a few spots in a perianth at 18/11degC in a growth cabinet. However, the number of these spots increased to 4.5 spots at 25/18degC and 6.3 spots at 32/25degC, respectively. It was suggested that the expression of the flower organ of lily was influenced by temperature. Moreover, this temperature-sensitive male-sterile cultivar would be useful as a breeding parent.