干旱区生态环境知识资源中心(Arid): Reproductive Biology of Solanum orbiculatum ssp. orbiculatum, an Australian Endemic Bush Tomato

Arid

DOI	10.3390/agronomy13112701
	Reproductive Biology of Solanum orbiculatum ssp. orbiculatum, an Australian Endemic Bush Tomato
	Ahmad, Nabil; Chamas, Ali; Trethowan, Richard
通讯作者	Ahmad, N
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2023
卷号	13 期号:11
英文摘要	The Australian tomato Solanum orbiculatum ssp. orbiculatum is an edible bush tomato endemic to the more arid areas of Western Australia, South Australia, and the Northern Territory. Breeding system data indicate that the plants are potentially self-compatible but are unable to carry out spontaneous autogamy or agamospermy. The flower is protogynous, as the stigma become receptive to pollen germination while still in bud condition and the anthers do not release pollen immediately after anthesis. This arrangement is a simple and common way to avoid too much self-pollination, favours cross pollination, and would allow forced bud pollination for hybrid development. The floral structure and morphology of this species can also encourage cross pollination, as the stigma is mostly exserted above the anther's tips. In an attempt to examine the hypothesis of a positive correlation between pollen grain size and style length, we found a statistically significant difference between the pollen size of the long-styled and short-styled flowers. Pollen in vitro germination and viability tests have been optimised to facilitate effective breeding work on this species. A modified Brewbake and Kwack (BK) medium supplemented with 20% sucrose and 2.5% PEG 4000 has been found to be the most efficient media components for the in vitro germination of viable pollen grains. Alternatively, Alexander's and acetocarmine (1%) stains have shown the highest positive correlation with the in vitro pollen germination test and, therefore, can be used as quick tests for checking pollen viability. Moreover, pollen grains stored for three months under 4 C-degrees and dry conditions can be used efficiently to effect fertilisation in breeding programs, as it can maintain more than 50% of the original viability. This study will contribute to understanding the evolution and systematic relationships of species and for founding effective conservation programs. Furthermore, understanding the reproductive biology of this species is also of interest because of its potential for tomato breeding.
英文关键词	bush tomato flower structure pollen pollination biology reproductive biology
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001109382400001
WOS关键词	POLLEN ; GERMINATION ; EVOLUTION
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395246
推荐引用方式 GB/T 7714	Ahmad, Nabil,Chamas, Ali,Trethowan, Richard. Reproductive Biology of Solanum orbiculatum ssp. orbiculatum, an Australian Endemic Bush Tomato[J],2023,13(11).
APA	Ahmad, Nabil,Chamas, Ali,&Trethowan, Richard.(2023).Reproductive Biology of Solanum orbiculatum ssp. orbiculatum, an Australian Endemic Bush Tomato.AGRONOMY-BASEL,13(11).
MLA	Ahmad, Nabil,et al."Reproductive Biology of Solanum orbiculatum ssp. orbiculatum, an Australian Endemic Bush Tomato".AGRONOMY-BASEL 13.11(2023).