Phenotypic and Demographic Variability Among Patches of Maianthemum canadense (Desf.) in Central New Jersey, and the use of Self-Incompatibility for Clone Discrimination

1986 ◽  
Vol 113 (4) ◽  
pp. 398 ◽  
Author(s):  
Wade B. Worthen ◽  
Edmund W. Stiles
2009 ◽  
Vol 91 (5) ◽  
pp. 354-359 ◽  
Author(s):  
Shuri Kato ◽  
Hiroaki Ishikawa ◽  
Yasuomi Ohta ◽  
Sayoko Hattori-Ogawa ◽  
Yuzuru Mukai

2008 ◽  
pp. 38-41
Author(s):  
L.L. Bondareva ◽  
V.I. Startsev

The use of heterosis is a forward direction in white head cabbage breeding program. This strategy enables to serve characteristic and yield improvements compared with best cultivars currently being used. At present time, the most suitable way to produce the hybrid seeds of cabbage is crossing between self incompatibility lines. 4-line crossed hybrids Avrora, (ultra fast ripening), and Snezhinka (mid-late ripening) with use of self incompatibility were obtained. The andro-sterile form has been multiplied by biotechnology methods and the sterility maintainers have been tested and fatherly forms have also been multiplied.


2000 ◽  
Vol 80 (3) ◽  
pp. 559-564 ◽  
Author(s):  
T. A. Campbell

The possibility of increasing hybridity in alfalfa (Medicago sativa L.) cultivars through the use of self-incompatible (SI) parents is being investigated. Prior research has demonstrated that self-incompatibility is a heritable trait and that environmentally stable SI clones can be selected. However, inbreeding depression is very severe in alfalfa, and a potential problem associated with utilizing self-incompatibility to increase hybridity is the purported positive relationship between self-incompatibility and inbreeding. Fifteen stable, partially to fully self-incompatible clones and 18 stable self-compatible (SC) clones were selected from the broad-based population W10-AC3. RAPD, Anchored Microsatellite Priming (AMSP), and Simple Sequence Repeat (SSR) analyses were performed on genomic DNA using 9, 10-mer RAPD primers; the AMSP primers (from the 5' end) CAA(CA)5, CCCC(GA)5, CCG(GA)5, and GCC(GA)5; and eight SSR primer pairs. Based on genetic distance (GD) estimates (computed from RAPD and AMSP markers) and numbers of tri-allelic and tetra-allelic loci from SSR analysis, there is no evidence that SI clones were more closely related than SC clones. Assuming parental GD is positively correlated with heterosis, environmentally stable SI clones with acceptable specific combining ability and separated by large GD's would be a good basis for a hybrid alfalfa system, or for use in other breeding schemes designed to minimize inbreeding while maximizing heterosis. Key words: Anchored microsatellite-priming, heterosis, inbreeding, RAPD, self incompatibility, SSR


1998 ◽  
Vol 21 (3) ◽  
pp. 375-379 ◽  
Author(s):  
Tatiana Góes Junghans ◽  
Ingrid Peters-Robinson ◽  
Fernando L. Bertolucci ◽  
Acelino Couto Alfenas

Self-incompatibility found in a Eucalyptus grandis clone was used to promote interspecific hybridization between E. grandis and E. urophylla clones. The interspecific hybridization achieved in an open-pollinated commercial seed orchard planted in Espírito Santo, Brazil was evaluated by the multi-locus outcrossing rate (tm) of the seed producing clone, E. grandis. The percentage of outcrossed seeds reached 95.9%. The outcrossing rate of individual trees was quite variable, but was always above 70.0%. Wright's coefficient was negative (F = -0.30) revealing an excess of heterozygous genotypes in the progeny. Genetic parameters confirmed the high degree of hybridization expected in this orchard. The 800-m wide protection belt of native tropical forest that surrounds this orchard has significantly reduced pollen contamination, in comparison to a 400-m wide belt used in another local seed orchard.


1999 ◽  
Vol 63 (12) ◽  
pp. 969-975 ◽  
Author(s):  
WR Cinotti ◽  
RA Saporito ◽  
CA Feldman ◽  
G Mardirossian ◽  
J DeCastro

JAMA ◽  
1966 ◽  
Vol 196 (7) ◽  
pp. 645-646
Author(s):  
F. B. Rogers
Keyword(s):  

1978 ◽  
Vol 33 (10) ◽  
pp. 959-961 ◽  
Author(s):  
Nancy S. Breland
Keyword(s):  

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