11/20/2023 0 Comments Ascochyta leaf blight campanulaThe damaged lawns started showing up around the first of June and out breaks have been occurring all summer long. It also occurs in cultivated fields as a weed. Ascochyta leaf blight is a grass fungus that causes a rapid straw to bleached appearance of the leaves primarily on Kentucky bluegrass and to a lesser extent on perennial ryegrass and tall fescue. To identify resistant individuals to assist AB resistance breeding, low-cost, high throughput, and reliable protocols for AB screening are needed. Lowermost leaves turn brown and infection moves up the stem. Ascochyta blight (AB) is a destructive disease of the field pea (Pisum sativum L.) caused by necrotrophic fungal pathogens known as the AB-disease complex. It grows on grassy places, dry hills, meadows, in deciduous and pine forests, woods, fields and roadsides, along railway lines and hedgerows, preferably in partial shade, in dry to moist sites and on clay soils, relatively rich in nitrogen, at an altitude of 0–2,000 metres (0–6,562 ft) above sea level. Botrytis leaf blight and spots on infected Lilium. Because any piece of the roots can sprout into a new plant, it is extremely hard to eradicate. It spreads by underground rhizomes and produces deep, taproot-shaped tubers. This plant has its overwintering buds situated just below the soil surface ( hemicryptophyte). The fruit is a capsule with five pores near the base, where the seeds are spread. The flowers are pollinated by insects (bees, flies, butterflies, etc.) ( entomophily). The flowering period extends from June through September. The fungus Ascochyta gerberae could in fact be an immature form of Septoria gerbera leaf lesions are similar. Ascochyta is a lawn disease that spreads rapidly, leaving large areas of bleached, blighted grass in its wake. The corolla is bell-shaped, with five deep lobes slightly ciliate. The sepals are lanceolate to ovate-lanceolate, entire, wide at the base up to 2.5 mm. The bracts are quite different and smaller than the leaves. The flowers are bright blue-violet (rarely white), 2 to 4 cm long, with short petioles standing to one side in the axils of the bracts. The inflorescence consists of nodding spikelike racemes with numerous drooping flowers. The upper stem leaves are sessile, lanceolate and shortly stalked. The basal leaves are triangular, narrow, with a heart-shaped or rounded base, jagged edges and are up to 12 centimetres (4.7 in) long. The stem is simple, erect and lightly pubescent and the leaves are usually shortly hairy. Campanula rapunculoides, known by the common names creeping bellflower or rampion bellflower, is a perennial herbaceous plant of the genus Campanula, belonging to the family Campanulaceae.Ĭampanula rapunculoides reaches on average 30–80 centimetres (12–31 in) of height, with a maximum of 120 centimetres (47 in).
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