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KMID : 1024520200290040415
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Journal of the Environmental Sciences
2020 Volume.29 No. 4 p.415 ~ p.421
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Effect of Germination Temperature, Spermine and Putrescine on Pollen Viability of Strawberry
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Lee Jung-Eun
Kim Hyeon-Do
Je Byoung-Il
Lee Yong-Jae
Park Young-Hoon
Choi Young-Whan
Son Beung-Gu
Kang Nam-Jun
Kang Jum-Soon
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Abstract
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This study was conducted to determine the optimum conditions for the treatment of polyamine to promote pollen germination and improve the fruiting rate by overcoming fertilization defects in low-temperature strawberry cultivation. The optimum temperature for pollen germination of strawberries was 30 for Seolhyang and 25 for Maehyang, and Seolhyang had a higher pollen germination rate than that of Maehyang. The addition of polyamines, namely spermine and putrescine to the medium improved the pollen germination rate and spermine treatment showed a better effect than putrescine treatment. The proper polyamine type and treatment concentration for enhancing the potency of pollen germination was 500 μM of spermine for both Seolhyang and Maehyang, which improved the pollen germination rate by 19-23% compared with that of the control. However, combined treatment of spermine and putrescine, resulted in a lower germination rate lower than that of the single treatment. Our results indicated that the treatment of polyamines during flowering in protected cultivation of strawberrise can improve the fruiting rate by overcoming the problem of poor pollen germination due to low temperature.
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KEYWORD
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Maehyang, Pollen germination, Seolhyang
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