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Variety traits

Rapeseed Heterosis

Brassica napus var. napus

Heterosis in rapeseed is the effect of first-generation hybrids outperforming parental lines or standards, manifested in increased seed yield, oil content, and plant stability.

In the reference 3 varieties crop Rapeseed, where this is mentioned in the description.

To evaluate the effect in rapeseed, true heterosis indices are used by comparing F1 with the best parental line, and competitive heterosis by comparing the hybrid with a released standard variety. Regarding winter rapeseed seed yield, true heterosis can reach 80–125%, while competitive heterosis typically varies in the range of 13–30%. For spring rapeseed, average heterosis values for yield range from 20–50%.

Heterosis is manifested not only in seed weight but also in yield structure components, such as the number of pods where values can reach 100%, as well as in vigorous early growth, improved branching, and resistance to environmental stress factors. Realizing the potential of hybrids in production requires the use of first-generation seeds obtained via cytoplasmic male sterility systems, as the heterosis effect is lost in F2.

General information about the subject — on the page Heterosis.

Sources8

Varieties of Rapeseed mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

DK Extrovert

Active

Brassica napus var. napus · Rapeseed

Nelly Guguin, Detlef Hauska,

DK FR IE UA
7 records

Hyola 401

Active

Brassica napus var. napus · Rapeseed

BUZZA| Greg Buzza c/o Zeneca Seeds / STOENESCU| Florin Stoenesu c/o Zeneca Seeds

DE
7 records

Lisolde

Terminated

Brassica napus var. napus · Rapeseed

BUSCH| Dipl.Ing.agr. Heiner Busch in Fa. Deutsche Saatveredelung AG / HAUSKA| Dipl. Ing. agr. Detlef Hauska

DE
1 record