feasibility of using diploid by tetraploid crosses to obtain triploid hops (Humulus lupulus L.)
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feasibility of using diploid by tetraploid crosses to obtain triploid hops (Humulus lupulus L.)

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Published .
Written in English


  • Hops -- Breeding.,
  • Hops -- Genetics.

Book details:

Edition Notes

Statementby Jeanine Streeter DeNoma.
The Physical Object
Pagination110 leaves, bound. :
Number of Pages110
ID Numbers
Open LibraryOL17681707M

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  Individuals with diploid-triploid syndrome have some cells with three copies of each chromosome for a total of 69 chromosomes (called triploid cells) and some cells with the usual 2 copies of each chromosome for a total of 46 chromosomes (called diploid cells). Having two or more different cell types is called mosaicism. Embryology of diploid by diploid and diploid by tetraploid crosses in Poinsettia. Hybridization between diploid cultivars of poinsettia results in abundant seed production. However, with the diploid used as the maternal parent in crosses with tetraploids, less than 1% viable seedlings are realized. In crosses between diploid T. gesneriana cultivars and diploid 2n gamete producers some triploid and tetraploid hybrids were obtained, where the tetraploids resulted from 2n gametes provided by.   Tets crossed with dips will sometime make a pod,however there will be no seeds is called an air you have a microscope you can check the size of the pollen with a tet polen will be larger than a dip and the triploid will be somewhere mes different parts of the plant are of different is called a Chimera and may happen when a dip is.

Triploid, Pentaploid and Aneuploid Matings: When triploids, pentaploids and aneuploids are used in mating with their like or the more normal diploid or tetraploid, a wide number of combinations can occur. Because these "offbeat" types produce gametes (pollen and egg) that are often incomplete or uneven, crosses with them are characterized by irregularity and unevenness, if they take at all. Dominant triploid fish, however, appeared to be more tolerant of subordinate individuals and did not display the same degree of invasive aggression as seen in the diploid and diploid or diploid. Diploid vs Tetraploid plants Plant characteristics. The main difference between diploid and tetraploid ryegrass is the number of chromosomes per cell. Diploid plants have two sets of chromosomes per cell whilst tetraploids have four. Tetraploids have an increased cell size due to File Size: 91KB. A Tetraploid plants can self-fertilize. B Crosses between tetraploid and diploid individuals produce tetraploid offspring. C Offspring from crosses between tetraploid plants and diploid plant are reproductively isolated. D Tetraploid plants crossed with diploid plants can produce viable offspring.

  To determine whether in potatoes the tetraploid level is preferable to the diploid level, especially regarding tuber yield, four diploid (2n=2×=24) Solanum phureja x dihaploid S. tuberosum hybrid parents and their vegetatively doubled, tetraploid (2n=4×=48) counterparts were intermated, which resulted in two F1 hybrid families at both levels of by: You have used fertile triploid(3x) as a female and tetraploid as a male. in nature anueploidy is tolerated more by female gamete than the male gamete. so viable aneuploids can be expected upon fusion of aneuploid female gamete with normal diploid pollen (from 4x parent) but they are sterile.   The discovery of an efficient means for obtaining haploids of the potato is slowly revolutionizing, reorienting, and stimulating potato research and breeding. This report is part of a study concerned with their use. as hybrids with species, in gene transfer through diploid-tetraploid hybridization. Such hybridization has been shown to be quite easily accomplished. In this paper, the Cited by:   Experimental crosses between diploids, triploids and tetraploids ofHieracium echioides were made to examine mating interactions. Specifically, cytotype diversity in progeny from experimental crosses, intercytotype pollen competition as a reproductive barrier between diploids and tetraploids, and differences in seed set between intra- and intercytotype crosses were by: