Ovular Tumors Connected With Incompatible Crosses in Datura

Satina, S.; Rappaport, J.; Blakeslee, Albert Francis

doi:10.1002/j.1537-2197.1950.tb11046.x

Cited by 37 publications

(8 citation statements)

References 23 publications

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“…In fact, the similar process of endosperm development was observed in 6x x 2x cross in Avena (Kihara and Nishiyama 1932) and in 4x x 2x cross in Raphanus (Nishiyama unpublished), which gave small F1 seeds in low and semi-fertility, respectively. In the present cross, 4x x 2x, the size of seeds obtained seldom was similar to that of 4x x 4x, so far observed (Table 2 and (Satina, et al 1950 andSansome et al 1942). In the present crosses, the overgrowth of the maternal tissue adjacent to the embryo sac was not recognized in all four crosses.…”

Section: Discussionsupporting

confidence: 84%

EMBRYOLOGICAL STUDIES ON CROSS-INCOMPATIBILITY BETWEEN 2x AND 4x IN <i>BRASSICA</i>

Nishiyama

Inomata

1966

The Japanese journal of genetics

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In higher plants, the collapse of immature seed is a frequent cause of sterility following interspecific hybridization or crosses between diploid and its auto-polyploid plants.In one or both sides of interspecific reciprocal crosses : Galeopsis (Muntzing 1930(Muntzing , 1933 In the present paper, the embryological changes leading to the failure of seed development in the reciprocal crosses between B. chinensis and autotetraploid B. pekinensis are described. MATERIALS AND METHODSAutotetraploid B. pekinensis Rupr, cultivar. Chiifu-hakusai and diploid B. chinensis 1) 2)Contribution from the

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Section: Discussionsupporting

confidence: 84%

EMBRYOLOGICAL STUDIES ON CROSS-INCOMPATIBILITY BETWEEN 2x AND 4x IN <i>BRASSICA</i>

Nishiyama

Inomata

1966

The Japanese journal of genetics

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“…Transfer cell walls are common at the sporophyte-to-gametophyte junction in all land plants, where they are posited to be the site of metabolite transfer between the two symplastically isolated generations, and they can be induced to develop in the presence of sugars (Offler et al, 2002). Cellular hypertrophy, hyperplasia, and collapse of the integument are also correlated with seed abortion in other species, whereby the deviant integument development is posited to form a physical barrier preventing the flow of assimilates to the embryo sac (Cooper and Brink, 1945;Satina et al, 1950;Miller and Chourey, 1992). Embryo abortion in almond is accompanied by callose deposition around the embryo sac and a decrease in metabolite supply to the embryo sac (Pimienta and Polito, 1982).…”

Section: Discussionmentioning

confidence: 99%

Self‐sterility in Ipomopsis aggregata (Polemoniaceae) is due to prezygotic ovule degeneration

Sage

Price

Waser

2006

American J of Botany

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Based on previous studies, extreme (>99%) self-sterility in scarlet gilia (Ipomopsis aggregata) appears to be involved in late-acting ovarian self-incompatibility (OSI). Here, we confirm this suggestion by comparing structural events that follow from cross- vs. self-pollinations of I. aggregata. Growth of cross- and self-pollen tubes in the style at 11 h and growth in the ovary at 24 h was equivalent. Nonetheless, by 24 h, cross-pollen effected a significantly higher percentage of both ovule penetration and fertilization. Ovules in self-pollinated flowers showed pronounced changes, including an absence of embryo sac expansion and reduced starch in the integument, by 11 h post-pollination, well before pollen tube entry into the ovary. In addition, the integumentary tapetum and adjacent 1-3 cell layers exhibited abnormal cell division, pronounced deposition of thick, pectin-rich cell walls, and cellular collapse. Ovules and embryo sacs from cross-pollinated flowers rarely showed such features. Developmental changes in ovules from self-pollinated flowers eventually resulted in integument and embryo sac collapse, a process not observed in ovules of unpollinated flowers. We suggest that OSI involves long-distance signaling between self-pollen or self-pollen tubes and carpel tissue that reduces availability of receptive ovules for fertilization before pollen tubes arrive in the ovary.

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“…Abnormal endosperm development could be the result of mitotic aberrations (Kapoor 1966), changes in the somatic tissue of ovules, as has been observed in Nicotiana and Lycopersicon after fertilization (Brink and Cooper 1947) or the formation of ovular tumor, as reported by Satina et al, (1950) in Datura. It has also been suggested (Brink and Cooper 1947) that in crosses between species not differing in chromosome number, as is the case of V. unguiculata and V. vexillata, seed failure results from combining qualitatively different genomes in the seed.…”

Section: Discussionmentioning

confidence: 99%

Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata

Barone¹,

Giudice²,

1992

Sexual Plant Reprod

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Interspecific hybridization between Vigna unguiculata and V. vexillata always failed: no seed was obtained in both crossing directions. Two different barriers to crossability were found: a pre-zygotic barrier and a post-zygotic one. Many abnormalities were observed in pollen-tube development, which reduced the percentage of fertilization to 18-30%. Differences in the percentage of fertilization were detected between the two accessions of V. vexilIata involved in the interspecific crosses. The development of the interspecific embryo was analyzed and the embryo and endosperm nuclei always degenerated 5-8 days after pollination. The growth of the embryo stopped at a globular stage, which is too early for excision and in vitro culturing.

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Ovular Tumors Connected With Incompatible Crosses in Datura

Cited by 37 publications

References 23 publications

EMBRYOLOGICAL STUDIES ON CROSS-INCOMPATIBILITY BETWEEN 2x AND 4x IN <i>BRASSICA</i>

EMBRYOLOGICAL STUDIES ON CROSS-INCOMPATIBILITY BETWEEN 2x AND 4x IN <i>BRASSICA</i>

Self‐sterility in Ipomopsis aggregata (Polemoniaceae) is due to prezygotic ovule degeneration

Barriers to interspecific hybridization between Vigna unguiculata and Vigna vexillata

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