How to make soybean crosses
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Transcript of How to make soybean crosses
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How to make soybean crosses
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When, Where and What you need
•Crossing is always done in the morning•Have a crossing plan•Controlled environment (screen house or glass house)•Essential tools: magnifying lenses and forceps•Clean forceps with alcohol in between different crosses •Good skills and steady hands
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How to make soybean crosses
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Female plant Male plant
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Collect freshly opened flower from the male parent plant
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Select an unopened flower bud on the female plant with the petals just showing above the sepals
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Remove all other flowers and buds at the node
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Remove the sepals
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Gently remove the petals by lifting them with the forceps thus expose the anther
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Tease the anthers out with the tip of the forceps being careful not to damage the stigma
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Hold the flower to be used as a male and remove the sepals
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Touch the anthers of the flower to the stigma of the emasculated flower
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The tag must include a description of the cross (female and male pedigree).It should also include the date and the crosser’s initials.
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Attach a tag to the stem at the node where the cross was made