Breeding method for temperate corn employing tropical germplasm

Breeding method for temperate corn employing tropical germplasm

  • CN 103,026,963 A
  • Filed: 12/28/2012
  • Published: 04/10/2013
  • Est. Priority Date: 12/28/2012
  • Status: Active Application
First Claim
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1. Temperate maize breeding method of utilizing tropical germplasm, it is:

  • 1) material is selected;

    utilize the temperature of temperate zone germplasm inbred line A and tropical germplasm inbred line B assembly-tropical germplasm hybrid combination A * B or B * A, or utilization temperature-tropical germplasm crossbreed C is as breeding material;

    Selection;

    first temperature-tropical germplasm hybrid combination A * B/B * A or temperature-tropical germplasm crossbreed C are adopted the method seed selection 1-2 generation of mixed pollination or the rear mixed pollination that backcrosses, choose afterwards the continuous selfing of individual plant, select through multigeneration spectrum, breed the temperature that has temperate zone and tropical germplasm characteristics concurrently-tropical germplasm inbred line X;

    With the temperature bred-tropical germplasm inbred line X and temperate zone germplasm inbred line G or tropical germplasm inbred line I hybridization, carry out the test of crossbreed multiple spot in different latitude, breed the temperature that has temperate zone and tropical germplasm characteristics concurrently-tropical germplasm crossbreed Z;

    Or

         2) material is selected;

    select the tropical germplasm hybrid combination D * E of tropical germplasm inbred line D and tropical germplasm inbred line E assembly, or select tropical germplasm crossbreed F as breeding material;

    Selection;

    first tropical germplasm hybrid combination D * E or tropical germplasm crossbreed F are carried out the 1-2 mixed pollination seed selection in generation, choose afterwards the continuous selfing of individual plant wherein, select through the multigeneration spectrum, breed tropical germplasm inbred line Y;

    With the tropical germplasm inbred line Y that breeds and temperature-tropical germplasm inbred line X or temperate zone germplasm inbred line G hybridization, carry out the crossbreed multiple spot in the different latitude place and test, breed the temperature that has temperate zone and tropical germplasm characteristics concurrently-tropical germplasm crossbreed Z.

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