Environmental stress and the relationships among allozyme heterozygosity, biomass and biomass components in jack pine (Pinus banksianaLamb.)

✍ Scribed by D. R. Govindaraju; B. P. Dancik

• Book ID: 104624554
• Publisher: Springer Netherlands
• Year: 1987
• Tongue: English
• Weight: 526 KB
• Volume: 74
• Category: Article
• ISSN: 0016-6707
• DOI: 10.1007/bf00056112

✦ Synopsis

The relationships among a11ozyme heterozygosity, biomass, and seven components of biomass were studied in fifteen open-pollinated families of jack pine grown on four soil substrates. Most of these relationships were curvilinear, and were found under sub-optimal environments. None of the eight characters showed a consistent relationship with ailozyme heterozygosity on the four media. Allozyme heterozygosity (phenotype) and heterozygosity (heterosis) used in conventional breeding techniques appeared to respond similarly to environmental variation. The intensity of expression of the relationship between allozyme heterozygosity and quantitative traits may be partially under environmental control. This conclusion is consistent with previous findings on the expression of heterosis in different environments.