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A comparison of apple and pear seedlings with reference to the juvenile period. II. Mode of inheritance

✍ Scribed by T. Visser

Publisher: Springer
Year: 1976
Tongue: English
Weight: 190 KB
Volume: 25
Category: Article
ISSN: 0014-2336
DOI: 10.1007/bf00041565

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✦ Synopsis

Analysis of two incomplete half-diallel schemes of crosses, involving 22 apple and 33 pear progenies with 2500 and 5400 seedlings respectively, showed a highly significant GCA and an insignificant SCA variance for the juvenile period (J.P.). This indicates that the inheritance of the J.P. is of an additive nature, a mode of inheritance which is a function of the inheritance of a complex of factors governing 'growth'. The mean J.P. of apple progenies varied between 3.4 and 5.0 years, that of pear progenies between 4.7. and 7.0 years. The implications for breeding are discussed.

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A comparison of apple and pear seedlings

A comparison of apple and pear seedlings with reference to the juvenile period I. Seedling growth and yield

✍ T. Visser; J. J. Verhaegh; D. P. Vries 📂 Article 📅 1976 🏛 Springer 🌐 English ⚖ 452 KB

Several thousand apple and pear seedlings of many progenies were studied in connection with their juvenile period (J.P.). The initially significant inverse relation between the vigour (stem diameter) and the J.P. of the seedlings became insignificant as the trees grew older, due to a retardation of