Engineered genes for fertility control and their application in hybrid seed production

Reynaerts, A.; Wiele, Hilde Van de; Sutter, Greta De; Janssens, Jan

doi:10.1016/0304-4238(93)90028-o

Cited by 36 publications

(23 citation statements)

References 13 publications

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“…Watts (1958) and Reynaerts et al (1993) attempted to pollinate lettuce under enclosure conditions using hoverflies or bumblebees but were not successful. The European honeybee Ap.…”

Section: Discussionmentioning

confidence: 99%

“…Malesterility can be utilized in F 1 hybrid breeding procedures for self-fertilized plants. In lettuce and its progeny crossed with allied species, seven malesterile loci have already been identified (Lindqvist, 1960;Ryder, 1963Ryder, , 1967Ryder, , 1971) and male-sterile lettuce has also been recently produced through genetic engineering (Reynaerts et al, 1993). However, the commercial production of F 1 hybrid lettuce seed using male-sterility has not yet been successful.…”

Section: Introductionmentioning

confidence: 99%

“…Flower visitors (ϭpotential pollinators) which can transport the lettuce pollen grain efficiently, have not been found. This poses an obstacle for the commercial production of F 1 hybrid lettuce seed (Ryder, 1967;Reynaerts et al, 1993). Previous studies (as described below) on the pollinators of lettuce have been performed to recognize the danger of contamination of pure-lines by cross-pollination.…”

Section: Introductionmentioning

confidence: 99%

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Flower visitors of lettuce under field and enclosure conditions

Goubara

Takasaki

2003

Appl. Entomol. Zool.

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Insects visiting lettuce flowers were investigated under field and enclosure conditions. In a 4-year field survey, visitors of 11 species belonging to 3 orders were observed. Most species visiting the flowers were sweat bees (Hymenoptera; Halictidae). The frequency (total days of visitation to lettuce flower/total days of flight by the insect) of visitations by the sweat bee Lasioglossum villosulum trichopse was obviously higher at 65.5% than those of other insects. Honeybees were not observed on the lettuce flowers. In a 5-year survey under enclosure conditions, 10 of 17 bee species reared and a hoverfly were observed to visit the lettuce flowers. The highest frequency of visitation was shown by L. villosulum trichopse (59.4%), followed by Andrena knuthi (19.2%) and Osmia cornifrons (8.6%). Most visitors were one-day foragers and classified as temporary nectar foragers and continual pollen (and nectar) gatherers. Continual nectar foraging was observed in only 3 species, L. villosulum trichopse, An. knuthi and Ceratina boninensis. Daily flight activities of L. villosulum trichopse and the Lactuceae oligolectic bee An. knuthi corresponded to the morning blooming time of lettuce. The sweat bee L. villosulum trichopse may be a pollinator for hybrid seed production of lettuce.

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“…Watts (1958) and Reynaerts et al (1993) attempted to pollinate lettuce under enclosure conditions using hoverflies or bumblebees but were not successful. The European honeybee Ap.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Flower visitors of lettuce under field and enclosure conditions

Goubara

Takasaki

2003

Appl. Entomol. Zool.

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“…Approaches to genetic engineering of male-sterility have been applied to Magdebourg, Witloof and Chioggia genotypes [56]. Nevertheless, this technique is currently not in use, as the public opinion disapproves of the application of genetically modified organisms in food production.…”

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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“…Some advantages, such as hybrid vigor (or heterosis), uniformity suited for mechanical harvesting and disease resistance, are expected to be gained from the F 1 cultivar of lettuce (Ryder, 1963;Takada and Fujino, 1987;Langton et al, 1990). Despite the existence of several studies on male-sterility which is one of the F 1 hybrid breeding procedures for self-fertilized crops (Lindqvist, 1960;Ryder, 1963Ryder, , 1967Ryder, , 1971Reynaerts et al, 1993;Curtis et al, 1996), specific techniques for the commercial production of F 1 hybrid lettuce seed have not yet been developed. Backward development of an efficient insect pollinator for lettuce remains a major obstacle to commercial F 1 hybrid seed production (Ryder, 1967;Reynaerts et al, 1993).…”

Section: Introductionmentioning

confidence: 99%

Pollination effects of the sweat bee Lasioglossum villosulum trichopse (Hymenoptera: Halictidae) on genic male-sterile lettuce

Goubara

Takasaki

2004

Appl. Entomol. Zool.

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For development of an F 1 hybrid of lettuce cultivars, an efficient pollinator must be found. To evaluate pollination effects of a candidate pollinator, Lasioglossum villosulum trichopse, the foraging behavior and pollination ability of this sweat bee were investigated on the flowers of male-fertile (MF) and genic male-sterile (GMS) lettuce. Females of the sweet bee visited three lettuce cultivars for a short time corresponding to each cultivar's full blooming time and showed unique foraging behavior on the MF lettuce flower. The flower heads thus visited by a single pollen-gathering female sweat bee indicated a seed set as high as that of self-pollinated flower heads on a fine day. On the GMS lettuce, the rate of seed set was significantly lower in the bee-pollinated flower heads than that of hand-pollinated flower heads which bloomed on fine days. The low seed set was considered to be associated with weather conditions during the experimental period. This is the first report of successful F 1 hybrid seed production of lettuce using a pollinator insect.

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Engineered genes for fertility control and their application in hybrid seed production

Cited by 36 publications

References 13 publications

Flower visitors of lettuce under field and enclosure conditions

Flower visitors of lettuce under field and enclosure conditions

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

Pollination effects of the sweat bee Lasioglossum villosulum trichopse (Hymenoptera: Halictidae) on genic male-sterile lettuce

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