double cross


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double cross

a method of plant breeding in which four different inbred lines are crossed together (A x B and C x D) and the progenies crossed again ((A x B) x (C x D)) to produce a four-way hybrid seed with good vigour.
References in periodicals archive ?
24) In Operation Mincemeat, in which the Double Cross system played a far smaller role, the aim of the deception was to convince the Germans that the Allies planned to launch their Italian campaign with an invasion of Sardinia and Greece, rather than Sicily, which was considered the obvious target by both the Germans and the Allies.
A gem, we may say, Double Cross certainly is, albeit flawed.
There was little US involvement in the Double Cross scheme.
Macintyre is an excellent storyteller and writer, and Double Cross is his best book to date.
In 1941 the whole operation was formalised under the leadership of the so-called Twenty Committee (because a double cross in Roman numerals reads as 20).
i], and the highest-yielding double cross (eighth highest for yield overall) ranked only 15th for [V.
With a crossover no longer seen as a double cross, dudes in 2002 were taking advantage of the wealth of terrain and styles skating has to offer.
Double Cross follows a similar format, with the winner picking up a cheque for pounds 5,000 if they manage to charm their fellow competitors.
He laughs when a rueful Stalin bemoans Hitler's double cross, saying, "Ech, together with the Germans we would have been invincible.
The Lockerbie saga has been surrounded by a succession of interlocking theories which have reached their finest flowering in a documentary film, The Maltese Double Cross, directed by an American living in London, Allan Francovich.