Journal article

Publication year: 1976

Pages: 56-66

Journal: Zeitschrift für Pflanzenzüchtung = Journal of plant breeding

Volume number: 77

Issue number: 1

ISSN: 0044-3298

Publisher: Parey

Abstract: 
Although winter rape shows a high self-fertilization rate after artificial self-pollination, a large number of self-fertilized plants show important inbreeding depressions which compare with those found in sunflowers and maize. In some cases inbred lines show a higher yield than the heterozygous variety. Of the F1 progenies from crosses by hand, 21% show heterosis in yield with a value of 117 relative to the standard variety, 18% in height with a value of 109 relative to the standard variety. Only in very few cases does the raw oil content show better results than the standard variety. In any case, and especially with regard to oil content: it is essential to test for specific combining ability in order to obtain high heterosis effects. With the partially allogramous rape, heterosis can be put to practical use in synthetic varieties provided that the lines have a high performance and a good combining ability with high cross pollination rate (little self-fertilization).

Harvard Citation style: SCHUSTER, W. and MICHAEL, J. (1976) INVESTIGATIONS INTO INBREEDING DEPRESSIONS AND HETEROSIS EFFECTS IN RAPE (BRASSICA-NAPUS-OLEIFERA), ZEITSCHRIFT FUR PFLANZENZUCHTUNG-JOURNAL OF PLANT BREEDING, 77(1), pp. 56-66

APA Citation style: SCHUSTER, W., & MICHAEL, J. (1976). INVESTIGATIONS INTO INBREEDING DEPRESSIONS AND HETEROSIS EFFECTS IN RAPE (BRASSICA-NAPUS-OLEIFERA). ZEITSCHRIFT FUR PFLANZENZUCHTUNG-JOURNAL OF PLANT BREEDING. 77(1), 56-66.