Cold Storage Period of Bulbs Influences Their Sugar Contents and Post-Storage Growth and Flowering in Lilium Oriental Hybrids

Jiseon Kim and Wook Oh
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Jiseon Kim: Department of Horticultur and Life Science, Yeungnam University, Gyeongsan 38541, Korea
Wook Oh: Department of Horticultur and Life Science, Yeungnam University, Gyeongsan 38541, Korea

Agriculture, 2021, vol. 11, issue 11, 1-10

Abstract: This study was carried out to investigate the changes in internal shoot growth, total and reducing sugar content, plant growth, and flowering characteristics after cold-stored bulbs of Lilium Oriental Hybrids are planted. Bulbs of Lilium Oriental Hybrids ‘Le Reve’, ‘Sorbonne’, and ‘Siberia’ were harvested at the end of November, cleaned, treated with fungicides, conditioned for 30 days at 4 °C, and cold-stored for 30 to 120 days at 0 °C. Plant height, fresh and dry weights, leaf numbers and area, chlorophyll content (SPAD index), days to flowering, number of flower buds, and flower diameter were measured when the cut flowers were harvested. In all cultivars, the shoot lengths in the bulbs increased as the storage period increased. As the storage period was extended, the fructose and glucose contents increased, whereas sucrose content decreased. The total sugar content increased during the early storage period and decreased subsequently. Plant height, fresh and dry weights of cut flowers showed a decreasing trend as the storage period increased. Flower diameter generally decreased with increasing storage period but varied among cultivars. These results indicated that more storage carbohydrates in bulbs were consumed as the storage period increased, and thus, the subsequent plant growth and flowering were negatively affected.

Keywords: bulb quality; cut flower quality; low temperature storage; sugar content (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
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