Which of the following annuals require the isolation distance of 50-100 meters for seed production?
(A). Antirrhinum
(B). Marigold
(C). Larkspur
(D). Nasturtium
Choose the correct answer from the options given below:
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Self-pollinated or partially cross-pollinated flower crops like Antirrhinum, Sweet Pea, and Nasturtium require lower isolation distances (50-100 m), while highly cross-pollinated Asteraceae crops like Marigold and Zinnia require up to 400 m.