Analysis of Spike Development of Three Spring Wheat Genotypes under Various Cultural Conditions

Effects of Selected Plant Growth Regulators on Bread Wheat Spike Development

“…The number of initiated spikelets per spike, spikelet initiation rate, and the length of the shoot apex from double ridge to terminal spikelet are important, and the final grain yield will be higher if those traits are higher. Thus, during the period from double ridge to terminal spikelet, two important traits, namely, number of spikelets per spike and number of florets per spikelet, are shaped, and they have an effect on the final grains number, consequently, the grain yield can be increased (Itoh et al, 1998), because there is a close positive relationship between the grains number per spike and the final grain yield (Duggan et al, 2000;Brancourt-Hulmel et al, 2003;Gonzá lez et al, 2003). Also, the relationship between the spikelet and the spike can determine the yield production capacity (Duggan & Fowler, 2006).…”

“…The final grain yield of wheat consists of three main components, namely, the number of spikes per ground unit, the number of grains per spike, and thousand grain weight, and each component is shaped during a specific stage of wheat growth and development ( Figure 1) (Itoh et al, 1998;Acreche & Slafer, 2006). However, there are two main methods for classifying the different growth stages of wheat: morphological classification and physiological classification.…”

Μελέτη της επίδρασης διαφορετικού βαθμού υδατικής καταπόνησης στην αναπαραγωγική ανάπτυξη εγχώριων πληθυσμών και ποικιλιών σκληρού σιταριού Triticum turgidum ssp. durum

“…Η χρονική πορεία της αύξησης του μήκους των εμβρυακών στάχεων ήταν σε όλες τις περιπτώσεις ασύμμετρη σιγμοειδής. Στα ίδια αποτελέσματα κατέληξαν στο σιτάρι και αρκετές ακόμα πειραματικές μελέτες (Fischer and Stockman, 1980;Brooking and Kirby 1981;Kirby, 1988;Itoh et al, 1998;Fischer, 2011). Οι Li et al (1999), βρήκαν ότι η αύξηση του μήκους των στάχεων ταίριαζε ικανοποιητικά σε συναρτήσεις εκθετικής μορφής.…”