A Study on Cultivation of Petalonia fascia (Scytosiphonales, Phaeophyta) by Vegetative Regeneration

ALGAE ◽  
2003 ◽  
Vol 18 (4) ◽  
pp. 333-339
Author(s):  
Kang-Hwa Lee ◽  
Jae-Hyun Cho ◽  
Jong-Ahm Shin
Keyword(s):  
Vegetative Regeneration ◽  
Petalonia Fascia

Western Australian Species-Rich Kwongan (Sclerophyllous Shrubland) Affected by Drought

1980 ◽  
Vol 28 (6) ◽  
pp. 573 ◽  
Author(s):  
RJ Hnatiuk ◽  
AJM Hopkins
Keyword(s):  
Water Stress ◽  
Drought Stress ◽  
Western Australia ◽  
Vascular Plants ◽  
Perennial Species ◽  
Australian Species ◽  
Vegetative Regeneration ◽  
Average Rainfall ◽  
Two Factors ◽  
Western Australian

Observations of responses to aseasonal water stress are reported for 238 above-ground perennial species of native vascular plants in a 20 km2 area of Western Australia surveyed during the second consecutive year of below average rainfall. Eighty-six species (36%) were found with dead individuals. Both vegetative regeneration and seedling regeneration appeared to be successful means of surviving drought stress in this region. The drought affected species of the families Proteaceae and Epacridaceae more than those of other major families. There are similarities in the response of the vegetation to the two main, irregularly occurring phenomena, aseasonal drought and fire: both can affect vegetation over large areas and yet leave considerable patches within the area that are little affected. Together these two factors contribute to the production of complex and dynamic mosaic-patterns in the vegetation.

Comparative abilities of vegetative regeneration among aquatic plants growing in disturbed habitats

1998 ◽  
Vol 60 (3) ◽  
pp. 201-211 ◽  
Author(s):  
Marie-Hélène Barrat-Segretain ◽  
Gudrun Bornette ◽  
Andrea Hering-Vilas-Bôas
Keyword(s):  
Aquatic Plants ◽  
Vegetative Regeneration ◽  
Disturbed Habitats

The Western Hare-Wallaby Lagorchestes Hirsutus (Gould) (Macropodidae), in the Tanami Desert.

1978 ◽  
Vol 5 (3) ◽  
pp. 285 ◽  
Author(s):  
BL Bolton ◽  
PK Latz
Keyword(s):  
Northern Territory ◽  
Vegetative Regeneration ◽  
Whole Plant ◽  
Northern Territories

Study was of 2 small colonies of the rare western hare-wallaby (Lagorchestes hirsutus) in the Tanami Desert sanctuary of Northern Territories, Australia. Plants grazed were whole plant of Fimbristylis dichotoma and Calandrinia remota, leaves of Brunonia australis, Bassia astrocarpa and F. solidifolis and seed heads of Triodia pungens, Plectrachne schinzii, Bulbostylis barbaba and Eragrostis eriopoda. Cool winter fires lit deliberately along stock routes by nomadic aborigines provided firebreaks and resulted in different vegetative regeneration stages that suited the wallabies' requirements for cover and feed; the extensive hot fires started by lightning in summer destroyed habitat of the wallabies. ADDITIONAL ABSTRACT: Two small colonies of the rare western hare-wallaby (L. hirsutus) in the Tanami Desert sanctuary of Northern Territory, Australia were studied. Plants grazed were the whole plant of Fimbristylis dichotoma and Calandrinia remota, leaves of Brunonia australis, Bassia astrocarpa and F. solidifolis and seed heads of Triodia pungens, Plectrachne schinzii, Bulbostylis barbata and Eragrostis eriopoda. Cool winter fires lit deliberately along stock routes by nomadic aborigines provided firebreaks and resulted in different vegetative regeneration stages that suited the wallabies' requirements for cover and feed; the extensive hot fires started by lightning in summer destroyed the habitat of the wallabies.

Ecology of a forest weed of Newfoundland: vegetative regeneration strategy of Kalmia angustifolia

1993 ◽  
Vol 71 (1) ◽  
pp. 161-166 ◽  
Author(s):  
A. U. Mallik
Keyword(s):  
Growing Season ◽  
Regeneration Strategy ◽  
Stem Base ◽  
Kalmia Angustifolia ◽  
Vegetative Regeneration ◽  
Large Numbers ◽  
Below Ground ◽  
Vegetative Spread ◽  
First Time ◽  
Ground Structures

The vegetative regeneration characteristics of Kalmia angustifolia were studied by examining the near ground and below-ground structures of the plant. Three methods of vegetative regeneration were observed in Kalmia: layering, stem-base sprouting, and rhizomatous growth, which make the plant more resilient than other ericaceous plants of similar stature following disturbance. Layering occurred only in tall old Kalmia of undisturbed habitats. Stem-base sprouting and rhizomatous growth were found to be the most common and most effective modes of vegetative regeneration. These methods were common in both disturbed and undisturbed habitats. Three types of rhizome systems, namely primary, secondary, and tertiary rhizomes, were identified and described for the first time in Kalmia. Secondary rhizomes were found to be the most effective organ for vegetative spread of the plant. Some secondary rhizomes may grow more than 1 m in one growing season. A 5-year-old Kalmia may produce, on average, 36 secondary rhizomes with a total length of 750 cm. Secondary rhizomes of Kalmia first grow horizontally, then come aboveground growing vertically and exhibiting apical dominance. Large numbers of dormant vegetative buds (three at each node) and adventitious roots are produced at the rhizome nodes. Transverse sections of current-year rhizome showed many trichomes. The cells of the pith are thick-walled and are characterized by large lysigenous cavities. The anatomy of axillary buds and leaf primordia of the aboveground stems of Kalmia were similar to buds and bud scales of the rhizome. Key words: Kalmia, disturbance, fire, regeneration strategy, rhizome, trichomes.

Vegetative regeneration on sexual organs in Phycomyces blakesleeanus

Mycoscience ◽  
1996 ◽  
Vol 37 (3) ◽  
pp. 269-275 ◽  
Author(s):  
Yutaka Yamazaki ◽  
Tamotsu Ootaki
Keyword(s):  
Phycomyces Blakesleeanus ◽  
Vegetative Regeneration
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