Sporophytic and gametophytic recurrent selection for improvement of partial resistance to Alternaria leaf blight in sunflower (Helianthus annuus L.)

Euphytica ◽  
2006 ◽  
Vol 147 (3) ◽  
pp. 421-431 ◽  
Author(s):  
Shobha Rani T. ◽  
R. L. Ravikumar
Keyword(s):  
Helianthus Annuus ◽  
Partial Resistance ◽  
Recurrent Selection ◽  
Leaf Blight ◽  
Helianthus Annuus L ◽  
Alternaria Leaf Blight ◽  
Selection For

scholarly journals GENERAL AND SPECIFIC COMBINING ABILITY IN SUNFLOWER (Helianthus annuus L.) / APTITUD COMBINATORIA GENERAL Y ESPECÍFICA EN EL GIRASOL (Helianthus annuus L.) / APTITUDE À LA COMBINATION GENERAL ET SPECIFIQUE CHEZ LE TOURNESOL (Helianthus annuus L.)

Helia ◽  
2001 ◽  
Vol 24 (34) ◽  
pp. 1-16 ◽  
Author(s):  
Domenico Laureti ◽  
Andrea Del Gatto
Keyword(s):  
Helianthus Annuus ◽  
Combining Ability ◽  
Central Italy ◽  
Specific Combining Ability ◽  
First Year ◽  
Male Sterile ◽  
Breeding Programs ◽  
East Central ◽  
Helianthus Annuus L ◽  
Selection For

SUMMARYA total of 245 test cross progenies obtained by crossing cytoplasmic male sterile (CMS) lines and restorer (RHA) lines were evaluated in replicated trials in 1995 and 1997. Experiments were carried out in two locations (Osimo, East Central Italy and Budrio, Northern Italy) in 1995, whereas in 1997 trials were conducted only in Osimo. General combining ability (GCA) and specific combining ability (SCA) of the parents was evaluated to identify genotypes suitable to be used as testers for breeding programs and to verify the performance of hybrids. The results obtained in 1995 were used to make test crosses in 1996 to be evaluated in 1997. The GCA and SCA of RHA and CMS lines were nearly always significant for all the studied traits when lines were randomly taken in 1995. When selected testers were used on the basis of the results of the first year, the SCA of new RHA lines and GCA of new CMS lines were not significant for achene yield, but they were for the other traits.The best GCA estimates for RHA were often higher than those of CMS, indicating that selection for RHA could be more useful than for CMS. As expected, GCA was always lower than SCA. CMS and RHA, with high variance among their test crosses for yield and many other traits, could be used as testers. The lack of a tester with high variance in all traits requires more than one tester in evaluating lines. The GCA of a line can change in function of the germplasm with which it is combined.

Genetic architecture of factors underlying partial resistance to Alternaria leaf blight in carrot

2009 ◽  
Vol 118 (7) ◽  
pp. 1251-1259 ◽  
Author(s):  
Valérie Le Clerc ◽  
Anna Pawelec ◽  
Christelle Birolleau-Touchard ◽  
Anita Suel ◽  
Mathilde Briard
Keyword(s):  
Partial Resistance ◽  
Genetic Architecture ◽  
Leaf Blight ◽  
Alternaria Leaf Blight

Recurrent Selection for Maydis Leaf Blight Resistance and Grain Yield Improvement in Maize

2007 ◽  
Vol 10 (20) ◽  
pp. 3632-3637
Author(s):  
S. Salim Shah . ◽  
Hidayat-Ur-Rahman . ◽  
Iftikhar Hussain Kha . ◽  
Muhammad Iqbal .
Keyword(s):  
Grain Yield ◽  
Recurrent Selection ◽  
Leaf Blight ◽  
Blight Resistance ◽  
Yield Improvement ◽  
Selection For

scholarly journals QTL mapping of partial resistance to Phoma basal stem and root necrosis in sunflower (Helianthus annuus L.)

Plant Science ◽  
2007 ◽  
Vol 172 (4) ◽  
pp. 815-823 ◽  
Author(s):  
T. Abou Alfadil ◽  
S. Poormohammad Kiani ◽  
G. Dechamp-Guillaume ◽  
L. Gentzbittel ◽  
A. Sarrafi
Keyword(s):  
Qtl Mapping ◽  
Helianthus Annuus ◽  
Partial Resistance ◽  
Helianthus Annuus L ◽  
Root Necrosis
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