Читать книгу Principles of Plant Genetics and Breeding - George Acquaah - Страница 217

Four major parts of a flower are generally recognized – petal, sepal, stamen, and pistil. These form the basis of flower variation. Flowers vary in the color, size, numbers, and arrangement of these parts. Typically, a flower has a receptacle to which these parts are attached (Figure 5.3). The male parts of the flower, the stamens, comprise a stalk called a filament, to which is attached a structure consisting of four pollen‐containing chambers that are fused together (anther). The stamens are collectively called the androecium. The center of the flower is occupied by a pistil, which consists of the style, stigma, and ovary (contains carpels). The pistil is also called the gynoecium. Sepals are often leaf‐like structures that enclose the flower in its bud stage. Collectively, sepals are called the calyx. The showiest parts of the flower are the petals, collectively called the corolla.

Figure 5.3 The typical flower has four basic parts: petals, sepals, pistil, and stamen. The shape, size, color, and other aspects of these floral parts differ widely among species.