Histological Observations on Interspecific Crosses in the <i>Genus Lupinus</i>

Busmann‐Loock, Almut; Dambroth, Manfred; Menge‐Hartmann, U.

doi:10.1111/j.1439-0523.1992.tb00155.x

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…By studying histologically hybridization barriers in Lupinus, Busmann-Loock et al (1992) found, that the coenocytic endosperm did not differentiate into cellular endosperm. Alstroemeria also has a coenocytic endosperm, which has to become cellular after the nuclear stage.…”

Section: Discussionmentioning

confidence: 99%

Early postfertilization ovule culture in Alstroemeria L. and barriers to interspecific hybridization

Jeu

Jacobsen

1995

Euphytica

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An early postfertilization ovule culture technique in Alstroemeria was described in which young ovules were cultured in vitro two days after pollination. This resulted in the direct production of seedlings in a normally incongruous cross combination. A histological study of the in vitro cultured ovules revealed the development of the embryo inside the ovule in the absence of normal endosperm. The in vivo grown ovules showed a total breakdown of the developing seed within four weeks after pollination due to a postfertilization barrier. This ovule culture technique was applied in a diallel cross of seven Alstroemeria species, five from Chile and two from Brazil. The selfings and the reciprocal crosses between the Brazilian species A. inodora and A. brasiliensis were congruous and gave seed set. The cross A. inodora × A. pelegrina gave viable seeds. In all other 39 combinations no viable seeds were harvested. In those cross combinations both pre-and postfertilization barriers were found. After early ovule culture hybrid plants were obtained in 27 of the 39 incongruous species combinations of the diallel.Abbreviations: DAP -days after pollination, MS medium -medium according to Murashige & Skoog (1962)

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Section: Discussionmentioning

confidence: 99%

Early postfertilization ovule culture in Alstroemeria L. and barriers to interspecific hybridization

Jeu

Jacobsen

1995

Euphytica

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“…Malfunctioning of the suspensor and the embryo might, therefore, also lead to aberrations in embryogenesis. Differences in cell structures of the suspensor between intraspecific crosses and incongruent interspecific crosses were found in Lupinus (Busmann-Loock et al 1992) and in Medicago (Sangduen et al 1983).…”

Section: Causes For Embryo Abortionmentioning

confidence: 96%

The progamic phase, embryo and endosperm development in an intraspecific Tulipa gesneriana L. cross and in the incongruent interspecific cross T. gesneriana × T. agenensis DC.

Creij¹,

Went

Kerckhoffs³

1997

Sexual Plant Reproduction

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The development of the embryo and endosperm has been investigated in an intraspecific Tulipa gesneriana cross and in the incongruent cross T. gesneriana × T. agenensis at intervals of 10 days, from 12 to 82 days after pollination (DAP). In both tulip crosses, the zygote gives rise to an apparently undifferentiated cell mass, the proembryonal cell mass, on which a suspensor then develops. Subsequently, a globular embryo is formed on top of the suspensor. This embryo finally elongates, giving rise to a spindle-shaped embryo. The cellular endosperm fills the whole embryo sac in mature seeds, except for a region immediately around the embryo. In both crosses, aberrant developments were found. In the intraspecific T. gesneriana cross, the pollen tubes did not open in a number of ovules. In other ovules, the pollen tubes seemed to have opened, but an embryo or endosperm was not found or only endosperm was observed. In the cross T. gesneriana × T. agenensis, fewer pollen tubes entered the ovules than in the intraspecific T. gesneriana cross. The ovules with embryo and endosperm formation of the incongruent interspecific cross showed, in general, retarded development in comparison with the intraspecific T. gesneriana cross. The first globular embryos and spindle-shaped embryos were found at the later fixation dates and the relatively lower number of spindle-shaped embryos at 82 DAP had a shorter average length. The number of ovules with deformations in embryo and/or endosperm development was also higher in the cross T. gesneriana × T. agenensis in comparison with the intraspecific T. gesneriana cross. Between 87% and 100% of the ovules with embryo and endosperm development showed normal development in the intraspe-cific T. gesneriana cross, while in the incongruent interspecific cross, from 22 DAP, between 17% and 56% of the ovules showed normal development. Of those ovules with aberrations in embryo and/or endosperm formation, about 80% had a deformed endosperm, of which more than 50% also contained a deformed embryo. Embryos of the incongruent cross might be saved by the application of embryo rescue techniques.& k w d : Key words Interspecific hybridization · Embryo development · Endosperm development · Tulipa& b d y :

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“…After fertilization, the embryo can be aborted during seed development. In most cases, this is due to a defect in the growth of the endosperm, as revealed by Busmann-Loock et al (1992) in Lupinus sp. and by Ishizaka and Uematsu (1992) in Cyclamen.…”

Section: Post-fertilization Barriersmentioning

confidence: 99%

Current status on applications of conventional breeding techniques and biotechnological system in ornamentals

Kim

2020

J Plant Biotechnol

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Flower industry is now growing due to the development of economy in many countries. Simultaneously, needs from consumers in flower market are varied widely. To satisfy the needs from consumers and deal with a variety of diseases from a lots of pathogens as well as climate change, new elite flower cultivars should be released in flower market. For this purpose, conventional and biotechnological techniques can be employed to make good cultivar. Therefore, this review describes the general overview of flower breeding techniques including cross-hybridization, mutation breeding and genetic transformation systems. Also, breeding systems for ornamentals derived from plant tissue culture such as embryo culture, in vitro fertilization, ovary/ovule culture and haploid production were reviewed. Furthermore, in this study recent development of the generation of new flower cultivars using marker-assisted breeding, plant transformation including particle bombardment and Agrobacterium tumefaciens as well as genome-editing technology were described. This review will be contributed to the development and releasement of new flower cultivars with horticulturally useful traits in the future.

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Histological Observations on Interspecific Crosses in the Genus Lupinus

Cited by 7 publications

References 3 publications

Early postfertilization ovule culture in Alstroemeria L. and barriers to interspecific hybridization

Early postfertilization ovule culture in Alstroemeria L. and barriers to interspecific hybridization

The progamic phase, embryo and endosperm development in an intraspecific Tulipa gesneriana L. cross and in the incongruent interspecific cross T. gesneriana × T. agenensis DC.

Current status on applications of conventional breeding techniques and biotechnological system in ornamentals

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