Unreduced pollen frequencies versus hybrid production in diploid-tetraploid Vaccinium crosses

In this study, a new system performance evaluation method is introduced to the two-machine line. After that, the extended system aggregation model is developed and corresponding aggregation formulations are deduced.Different from traditional production models, the production line features unreliable buffers and multiple stochastic failure modes of the machines. The method is applicable to analyzing the cases arising from two or more stochastic events or more complex production lines

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Autoclaved Polyethylene Glycol decreases yeast protoplast reversion and hybrid production

Biotechnology Techniques ◽

10.1007/bf00158844 ◽

1990 ◽

Vol 4 (4) ◽

pp. 281-284 ◽

Cited By ~ 6

Author(s):

K. Kavanagh ◽

M. Ghannoum ◽

I. Mansour ◽

P. Whittaker

Keyword(s):

Polyethylene Glycol ◽

Hybrid Production ◽

Yeast Protoplast

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Optimising a Horizontally Integrated Push/Pull Hybrid Production System in a Foundry

Operations Research/Management Science at Work - International Series in Operations Research & Management Science ◽

10.1007/978-1-4615-0819-9_12 ◽

2002 ◽

pp. 189-203 ◽

Cited By ~ 1

Author(s):

Paul Corry ◽

Erhan Kozan

Keyword(s):

Production System ◽

Hybrid Production

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Unreduced Pollen in a Wild Tetraploid Relative of Sweetpotato

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.115.3.512 ◽

1990 ◽

Vol 115 (3) ◽

pp. 512-516 ◽

Cited By ~ 8

Author(s):

Alfred Jones

Keyword(s):

Ipomoea Batatas ◽

Gene Action ◽

Pollen Mother Cells ◽

Unreduced Pollen ◽

Wide Range ◽

Natural Mechanism ◽

Controlled Crosses ◽

Mother Cells

Nonreduction of pollen mother ceils was observed in a wild tetraploid morning-g&y related to the sweetpotato (Ipomoea batatas L. Lam.). Techniques for identifying and determining the frequency of expression of the trait are straightforward. Previous strategies for transfer of germplasm from tetraploid (2n = 4x = 60) species to the hexaploid (2n = 6x = 90) sweetpotato involved crosses with diploids (2n = 2x = 30) to obtain triploids that then were doubled to 6x. Nonreduction of pollen mother cells probably represents the natural mechanism for raising 4x to 6x since pollination of 2x ovules with unreduced pollen (4x) should give rise to 6x progeny without need for somatic doubling. Plants carrying this trait should be useful as bridging types for introgressing genes from wild 4x species into sweetpotato. A wide range in nonreduction (up to, 74%) was recovered In progeny of controlled crosses among selected plants, but data were not sufficient to estimate gene action.

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