Articles
Benzyl-amino-purine (BAP) and boron (B) increased production and quality of true seed of shallot (Allium cepa L. var. ascalonicum Backer)
Article number
1398_19
Pages
143 – 150
Language
English
Abstract
Shallot (Allium cepa L. var. ascalonicum Backer) is one of the important horticultural crops in Indonesia.
Shallot propagation using bulbs in the tropics has disadvantages, including the difficulty of storing and transporting the bulbs, and high disease transmission of the bulb-propagated plants.
Reproduction through true seeds can potentially avoid these problems.
Propagation through true seeds, however, is hindered by low botanical seed production, longer growth duration and low yield as true seeds tend to produce single bulbs.
To investigate the performance of these planting materials, the effects of plant growth regulator benzyl-amino-purine (BAP) and micronutrient boron (B) on the true seed of shallot seed quality and production was tested.
The studies were conducted in lowlands (100 m a.s.l.) and highlands (1250 m a.s.l.). Each experimental unit consisted of 12 plants, each treated with BAP at 0, 50, 100, 150, or 200 ppm, in combination with B at 0, 2, 3, or 4 kg ha‑1 by medium drenching.
In highlands, BAP or boron treatment improved number of seeds per umbel.
The percentage of flowering plants in the lowlands was low (11%) compared to highlands (91%). BAP at 50 ppm, however, significantly increased the percentage of flowering plants in the lowlands (28%) and highlands (97%), whereas B at 4 and 2 kg ha‑1 significantly improved the pollen viability in the highlands and lowlands, respectively.
Shallot propagation using bulbs in the tropics has disadvantages, including the difficulty of storing and transporting the bulbs, and high disease transmission of the bulb-propagated plants.
Reproduction through true seeds can potentially avoid these problems.
Propagation through true seeds, however, is hindered by low botanical seed production, longer growth duration and low yield as true seeds tend to produce single bulbs.
To investigate the performance of these planting materials, the effects of plant growth regulator benzyl-amino-purine (BAP) and micronutrient boron (B) on the true seed of shallot seed quality and production was tested.
The studies were conducted in lowlands (100 m a.s.l.) and highlands (1250 m a.s.l.). Each experimental unit consisted of 12 plants, each treated with BAP at 0, 50, 100, 150, or 200 ppm, in combination with B at 0, 2, 3, or 4 kg ha‑1 by medium drenching.
In highlands, BAP or boron treatment improved number of seeds per umbel.
The percentage of flowering plants in the lowlands was low (11%) compared to highlands (91%). BAP at 50 ppm, however, significantly increased the percentage of flowering plants in the lowlands (28%) and highlands (97%), whereas B at 4 and 2 kg ha‑1 significantly improved the pollen viability in the highlands and lowlands, respectively.
Publication
Authors
E.R. Palupi, R. Rosliani
Keywords
Allium cepa, botanical seeds, Indonesia accessions
Groups involved
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