Traditional breeding for high-yielding rice has been dependent on the widespread cultivation of gibberellin (GA)-deficient semi-dwarf varieties. Dwarfism lowers the "center of gravity" of the plant body, which increases resistance against lodging and enables plants to support high grain yield. Although this approach was successful in latter half of the 20th century in rice and wheat breeding, t...

This study examined the lodging resistance of mulberry tree (Morus bombycis Koidz. cv Kenmochi) shoots treated or not treated with succinic acid 2,2-dimethylhydrazide (SADH). The lodging safety factor, an indicator of lodging resistance, was defined as the ratio of critical lodging load to the leaf fresh weight observed, provided that the distribution of the critical lodging load along the stem...

How can disciplinary research in physiology complement wheat breeding? This introductory chapter is intended to provide broad guidelines to help breeding programs: 1) assess whether physiological criteria should be included in a breeding strategy; 2) evaluate specific physiological selection traits and determine their usefulness in breeding. The other chapters in this book provide more explicit...

Growth habit is an important agronomic trait that affects the production and productivity of crop plants including pulses. A preferential shift towards determinate growth types in pulses along with photo-insensitiveness was observed due to their reduced branching, shorter internodes, resistance lodging, shortened flowering period synchronized maturity, also its suitability for mechanical harves...

Tef [Eragrostis tef (Zucc.) Trotter] is the major cereal crop in the Horn of Africa, especially in Ethiopia where it is a staple food for over 60% of its 90 million population. The crop performs better than other cereal crops under extreme environmental conditions. The grain of tef is not only nutritious but also gluten-free, the cause for celiac disease, which affects humans world wide. The ob...

Garden chrysanthemums are a group of (Chrysanthemum morifolium) that mostly used in garden landscape collocations. Because most chrysanthemum varieties have low plants and poor space effects, they certain limitations applications. In this study, we selected seven with excellent characteristics for artificial hybridization intercross parentage to obtain new good traits need. The phenotypic the F...

This work aimed to position white oat cultivars for the organic system, and highlight which characteristics determine grain yield their interrelationships. The research was conducted at Instituto Regional de Desenvolvimento Rural belonging Universidade do Noroeste Estado Rio Grande Sul, located in municipality of Augusto Pestana – RS. experimental design used randomized blocks with treatments a...

in order to investigate genetic correlation and path analysis between grain yield and yield components, fifteen early maturing hybrids of grain corn (zea. mays) using a randomized complete block design with 4 replications were evaluated in khoramabad agricultural research center, iran. the data were collected and analyzed for ear emergence date, anthesis date, maturity date, plant height, ear h...