Читать книгу Horticultural Reviews, Volume 49 - Группа авторов - Страница 13

Oakleaf hydrangea is a shrub that is native to the southeastern United States and is growing in popularity as an ornamental plant. Like other cultivated hydrangea species, oakleaf hydrangea has showy flowers but also has unique phenotypic characteristics that provide additional value as an ornamental shrub. Despite the enormous popularity of hydrangeas as garden plants, little research has been done on oakleaf hydrangea. This review synthesizes the existing oakleaf hydrangea literature and draws on work done in other Hydrangea species to bring attention to the current knowledge and identify gaps to be filled. After introducing the genus, the review focuses on the horticultural aspects of oakleaf hydrangea, genetics and breeding of several selected traits, as well as the conservation concerns for the species. Finally, future lines of research that would provide valuable information for the breeding and conservation of oakleaf hydrangea are suggested.

Keywords: North American native plant; ornamental plant breeding; woody ornamental; genetic variation; horticultural variation;

1  INTRODUCTION

2  HISTORY AND TAXONOMY OF HYDRANGEA

3  NATURAL DISTRIBUTIONS OF HYDRANGEA SPECIES

4  HISTORY AND DISTRIBUTION OF OAKLEAF HYDRANGEA

5  MORPHOLOGY OF OAKLEAF HYDRANGEA

6  BIOTIC AND ABIOTIC CONSIDERATIONS

7  GENETICS AND BREEDING Ploidy and Genome Size Pollination Biology Breeding for Disease Tolerance/Resistance Breeding for Compactness Breeding for Cold Hardiness Breeding for Floral Characteristics Germplasm Resources Molecular Resources for Breeding Genetic Variation in Hydrangea

8  CONSERVATION

9  PROPAGATION

10  FUTURE PROSPECTS

1  LITERATURE CITED