Dormant mature and immature zygotic embryos of sunflower (Helianthus annuus L.) inbreds and hybrids were dissected and cultured on modified Murashige and Skoog's medium supplemented with 0.1 mg/l ...

Reproductive barrier formation between newly derived hybrid taxa and their parental species represents a major evolutionary hurdle. Here, I examine the development of a sterility barrier during hybrid ...

We are moving into the later part of summer when all of the spring and early summer perennials have finished up and it is time for those mid- to late-summer bloomers to take front stage. Keeping the ...

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