Seed weight patterns of Acacia tortilis from seven seed provenances across Botswana

N M Moleele, Mark Reed, L Motoma, O Seabe

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Laboratory-based seed storage systems have been developed as an alternative to in situ conservation for indigenous woody plant species. However, interactions between seed quality and environmental variables must be known for each species prior to seed collection, storage and sowing to ensure effective conservation. This study investigated Acacia tortilis seed weight/quality patterns across seven Botswana seed provenances in relation to: soil nutrient status, altitude; latitude; slope angle; % grass cover; height and density of other woody plants nearby. The higher rainfall and relatively eutrophic seed provenances of north-western Botswana (Chobe, Okavango and Makgadikgadi) were associated with large A. tortilis species and seeds, as well as higher densities of woody plants. Spatial variation in seed weights of A. tortilis was principally a function of rainfall and soil organic carbon. Although more work is required to establish the relationship between seed weight and germination rates for A. tortilis, this research suggests that seed collection should focus on sites with high levels of rainfall and soil organic carbon.

Original languageEnglish
Pages (from-to)146-149
Number of pages4
JournalAfrican Journal of Ecology
Volume43
Issue number2
DOIs
Publication statusPublished - May 2005

Keywords

  • Acacia tortilis
  • Botswana
  • indigenous
  • insitu
  • conservation
  • seed provenances
  • seed quality
  • growth

Cite this

Seed weight patterns of Acacia tortilis from seven seed provenances across Botswana. / Moleele, N M ; Reed, Mark; Motoma, L ; Seabe, O .

In: African Journal of Ecology, Vol. 43, No. 2, 05.2005, p. 146-149.

Research output: Contribution to journalArticle

Moleele, N M ; Reed, Mark ; Motoma, L ; Seabe, O . / Seed weight patterns of Acacia tortilis from seven seed provenances across Botswana. In: African Journal of Ecology. 2005 ; Vol. 43, No. 2. pp. 146-149.
@article{bde631b1b866440b9aaeca8c41e2cf48,
title = "Seed weight patterns of Acacia tortilis from seven seed provenances across Botswana",
abstract = "Laboratory-based seed storage systems have been developed as an alternative to in situ conservation for indigenous woody plant species. However, interactions between seed quality and environmental variables must be known for each species prior to seed collection, storage and sowing to ensure effective conservation. This study investigated Acacia tortilis seed weight/quality patterns across seven Botswana seed provenances in relation to: soil nutrient status, altitude; latitude; slope angle; {\%} grass cover; height and density of other woody plants nearby. The higher rainfall and relatively eutrophic seed provenances of north-western Botswana (Chobe, Okavango and Makgadikgadi) were associated with large A. tortilis species and seeds, as well as higher densities of woody plants. Spatial variation in seed weights of A. tortilis was principally a function of rainfall and soil organic carbon. Although more work is required to establish the relationship between seed weight and germination rates for A. tortilis, this research suggests that seed collection should focus on sites with high levels of rainfall and soil organic carbon.",
keywords = "Acacia tortilis, Botswana, indigenous, insitu, conservation, seed provenances, seed quality, growth",
author = "Moleele, {N M} and Mark Reed and L Motoma and O Seabe",
year = "2005",
month = "5",
doi = "10.1111/j.1365-2028.2005.00561.x",
language = "English",
volume = "43",
pages = "146--149",
journal = "African Journal of Ecology",
issn = "0141-6707",
publisher = "Wiley-Blackwell",
number = "2",

}

TY - JOUR

T1 - Seed weight patterns of Acacia tortilis from seven seed provenances across Botswana

AU - Moleele, N M

AU - Reed, Mark

AU - Motoma, L

AU - Seabe, O

PY - 2005/5

Y1 - 2005/5

N2 - Laboratory-based seed storage systems have been developed as an alternative to in situ conservation for indigenous woody plant species. However, interactions between seed quality and environmental variables must be known for each species prior to seed collection, storage and sowing to ensure effective conservation. This study investigated Acacia tortilis seed weight/quality patterns across seven Botswana seed provenances in relation to: soil nutrient status, altitude; latitude; slope angle; % grass cover; height and density of other woody plants nearby. The higher rainfall and relatively eutrophic seed provenances of north-western Botswana (Chobe, Okavango and Makgadikgadi) were associated with large A. tortilis species and seeds, as well as higher densities of woody plants. Spatial variation in seed weights of A. tortilis was principally a function of rainfall and soil organic carbon. Although more work is required to establish the relationship between seed weight and germination rates for A. tortilis, this research suggests that seed collection should focus on sites with high levels of rainfall and soil organic carbon.

AB - Laboratory-based seed storage systems have been developed as an alternative to in situ conservation for indigenous woody plant species. However, interactions between seed quality and environmental variables must be known for each species prior to seed collection, storage and sowing to ensure effective conservation. This study investigated Acacia tortilis seed weight/quality patterns across seven Botswana seed provenances in relation to: soil nutrient status, altitude; latitude; slope angle; % grass cover; height and density of other woody plants nearby. The higher rainfall and relatively eutrophic seed provenances of north-western Botswana (Chobe, Okavango and Makgadikgadi) were associated with large A. tortilis species and seeds, as well as higher densities of woody plants. Spatial variation in seed weights of A. tortilis was principally a function of rainfall and soil organic carbon. Although more work is required to establish the relationship between seed weight and germination rates for A. tortilis, this research suggests that seed collection should focus on sites with high levels of rainfall and soil organic carbon.

KW - Acacia tortilis

KW - Botswana

KW - indigenous

KW - insitu

KW - conservation

KW - seed provenances

KW - seed quality

KW - growth

U2 - 10.1111/j.1365-2028.2005.00561.x

DO - 10.1111/j.1365-2028.2005.00561.x

M3 - Article

VL - 43

SP - 146

EP - 149

JO - African Journal of Ecology

JF - African Journal of Ecology

SN - 0141-6707

IS - 2

ER -