Self-incompatibility in Senecio squalidus L. (Asteraceae)

Hiscock, Simon J.

doi:10.1006/anbo.1999.1058

Cited by 72 publications

(77 citation statements)

References 34 publications

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“…Even by artificial pollination, the seed set of self-pollination is only about 2.2% (Jiang 2005), but up to 20% selfing was determined in some Kenyan tea germplasm (Wachira & Kamunya 2005). The different result in self pollen penetrating ovule of tea may be caused by the different varieties and the experiment environments, since the phenotypically plastic trait of self-incompatibility has been reported to be related to genetic (Hiscock 2000), environment (Porcher & Lande 2005) and other factors (Sage et al 2006). …”

Section: Discussionmentioning

confidence: 99%

Late-acting self-incompatibility in tea plant (Camellia sinensis)

et al. 2012

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The self-incompatibility of tea plant (Camellia sinensis (L.) O. Kuntze) was studied with the methods of aniline blue fluorescence assay and paraffin sections. The characteristics of pollen tube elongation after hand pollination was analyzed in 4 tea cultivars, including 'Keemenzhong', 'Longjing-changye', 'Fuding-dabaicha' and 'Yabukita', under selfpollination and cross-pollination, respectively. Although there were some difference among cultivars, pollen tubes elongated through the style and reach the ovary successfully at 48 h after pollination for both cross-and self-pollen tubes in all the four cultivars of tea. Pollen tubes entered into the ovule micropyles, however, only for cross-pollination, but not for selfpollination. Pollen tubes of selfing plants, failed in fertilizing, seemed have some difficulties to enter the ovule. All of which indicated that the self-incompatibility of tea plant is a late-acting self-incompatibility system (LSI) or an ovarian sterility (OS), in which the self incompatibility was due to none self pollen tube penetrating into the ovule and no fertilization.

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Section: Discussionmentioning

confidence: 99%

Late-acting self-incompatibility in tea plant (Camellia sinensis)

et al. 2012

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“…Low S allele number in S. squalidus is probably a consequence of the extreme population bottleneck conditions predicted for the species during its introduction and establishment in the British Isles (Abbott and Forbes, 1993;Hiscock, 2000b). Unfortunately, important details about the introduction of S. squalidus such as the size of the initial founder population of S. squalidus introduced into the Oxford Botanic Garden and how plants were maintained and propagated before the 'escape' and subsequent dramatic population expansion during its spread away from Oxford are unknown (Harris, 2002).…”

Section: Discussionmentioning

confidence: 99%

The population genetics of sporophytic self-incompatibility in Senecio squalidus L. (Asteraceae) I: S allele diversity in a natural population

et al. 2002

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Twenty-six individuals of the sporophytic self-incompatible (SSI) weed, Senecio squalidus were crossed in a full diallel to determine the number and frequency of S alleles in an Oxford population. Incompatibility phenotypes were determined by fruit-set results and the mating patterns observed fitted a SSI model that allowed us to identify six S alleles. Standard population S allele number estimators were modified to deal with S allele data from a species with SSI. These modified estimators predicted a total number of approximately six S alleles for the entire Oxford population of S. squalidus. This estimate of S allele number is low compared

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“…Over 60% of Asteraceae are estimated to be self-incompatible with sporophytic genetic determination [37,38]. The existence of an effective system of sporophytic self-incompatibility (SSI) in chicory was demonstrated in two different studies analyzing the progeny of two crosses between inbred lines of Witloof chicory [24] and the progeny of the crosses between a wild-type chicory plant with a cultivated Radicchio plant of "Red of Chioggia" [25].…”

Section: The Reproductive System Of Chicorymentioning

confidence: 99%

Current Advances in Genomics and Breeding of Leaf Chicory (Cichorium intybus L.)

2016

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Abstract:This review gives an overview of agricultural topics on a non-model species, in other words, leaf chicory. Often classified as a minor crop, "Radicchio", the Italian name of leaf chicory, is assuming a very important role at both a local and national level, as it characterizes a high proportion of the agricultural income of suited areas. Botanical classification along the genus Cichorium is reported and a detailed description of the most important cultivated biotypes typical of northern Italy is presented. A special consideration is reserved to breeding aspects, from molecular marker-assisted selection to the implementation of the first genome draft and leaf transcriptomes. Sexual barriers, for example, self-incompatibility or male-sterility, are described in great detail with the aim to be utilized for breeding purposes. The main aspects of seed production are also critically presented. In conclusion, the present work is a sort of handbook to better understand this orphan crop and it is mainly directed to breeders and seed producers dealing with leaf chicory.

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Self-incompatibility in Senecio squalidus L. (Asteraceae)

Cited by 72 publications

References 34 publications

Late-acting self-incompatibility in tea plant (Camellia sinensis)

Late-acting self-incompatibility in tea plant (Camellia sinensis)

The population genetics of sporophytic self-incompatibility in Senecio squalidus L. (Asteraceae) I: S allele diversity in a natural population

Current Advances in Genomics and Breeding of Leaf Chicory (Cichorium intybus L.)

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