approved Redacted for Privacy Ralk S. Quatrano The activity of a highly purified plant lectin, wheat germ agglutinin (WGA), has been detected in wheat embryos as young as 25 days post-anthesis. The amount of hemagglutinating activity present in young embryos increases to a maximum level at 45 days post-anthesis. No lectin activity was found in the endosperm, roots, leaves or in a wheatembryo ti...

Spike fertility traits are critical attributes for grain yield in wheat (Triticum aestivum L.). Here, we examine the genotypic variation in three important traits: maximum number of floret primordia, number of fertile florets, and number of grains. We determine their relationship in determining spike fertility in 30 genotypes grown under two contrasting conditions: field and greenhouse. The max...

BACKGROUND AND AIMS Although the apical development of wheat has been widely described, studies analysing how genetic breeding over the 20th century influenced the developmental phases and its consequences on yield generation are lacking, especially for durum wheat under field conditions in Mediterranean environments. The aims of this study were to analyse the effects of breeding in Spain and I...

The effect of pre and post-anthesis shading (20% of incident radiation) on pericarp development, cotyledon cell number and seed growth dynamic of fruits from three positions in the capitulum (peripheral, mid and central) of two sunflower (Helianthus annuus L.) genotypes were studied at two locations. Both shading treatments reduced pericarp weight, fruit volume and total yield per plant. Plants...

Floret development is critical for grain setting in wheat (Triticum aestivum), but more than 50% of grain yield potential (based on the maximum number of floret primordia) is lost during the stem elongation phase (SEP, from the terminal spikelet stage to anthesis). Dynamic plant (e.g., leaf area, plant height) and floret (e.g., anther and ovary size) growth and its connection with grain yield t...

Abstract. Damayanti F, Garvita RV, Wawangningrum H, Rahayu S. 2021. Flower development, pollen viability and storage test of Aeschynanthus radicans. Biodiversitas 22: 1940-1945. radicans Jack. commonly-known as lipstick flowers, is an epiphytic plant in Gesneriaceae family. It has attractive morphology easy to grow. Therefore A. used mother species for hybridization by breeders. The flowers are...