The Effect of Seed Size on Germination and Seedling Growth in Sweet Chestnut (Castanea sativa Mill.)

Abstract

The quantity and quality of seedlings in the nursery has an impact on the success of re-establishment and later growth. High germination rates enable a sufficient number of seedlings, and their quality is assessed using a number of parameters, including seedling height and root collar diameter. These parameters are influenced in some species by seed size, but the correlation between them is species-specific. The model species in this research was sweet chestnut (Castanea sativa Mill.), and seeds from 12 populations from two distinct biogeographical regions of Croatia were collected. We examined the influence of seed size on four parameters: germination rate, seedling height, root collar diameter and sturdiness quotient. Seed size has been shown to have a positive influence on both seedling height and root collar diameter, whereas no such correlation was noted for germination rate and sturdiness quotient. Significant differences in nut size and seedling growth parameters were found between the Mediterranean and continental populations, with higher values observed in the coastal Mediterranean populations. We concluded that seed origin and seed size have a significant impact on seedling growth and are important factors to consider when choosing seed material. Further nursery operations should consider seed origin and local environmental conditions when choosing seedlings for reforestation efforts and general forest operations.

Variation of Morphological Traits and Quality Indices of Micropropagated Melia volkensii Gürke Clones before Field Planting

“…The plant SQ increased parallelly with PH, NL, INL, NR, and LA. Our findings agree with [47], who reported a significant positive correlation between seedling height and SQ of Castanea sativa Mill. populations.…”

WITHDRAWN: Variation of seed metrics and germination among landraces and improved varieties of African Nightshade (Solanum spp.) under cold room storage

“…Seed size and weight are useful in seed selection, seeding rate calibration and breeding activities. In some species, seed size determines germination ability and seedling vigor of seed-lot (Elliott et al 2007;Tumpa et al 2021). Collectively, they are useful in understanding seed storability traits of seed-lot and the physical characteristics of seeds.…”

Stability of Transgene Inheritance in Progeny of Field-Grown Pear Trees over a 7-Year Period

“…The biosafety regulatory requirements are one of the reasons for the limited commercial use of GM fruit trees [51]. Many studies have shown a positive correlation between seed weight and germination and/or the subsequent growth of seedlings in various tree species [52][53][54]. As far as we know, the seed quality of transgenic trees has not been evaluated before.…”