Developmental morphology and evolution of extraembryonic membranes of lizards and snakes (Reptilia, Squamata)

In sunflower (Helianthus annuus L.), there has been an intense genetic selection for achenes with agronomic value, such as greater mass, oil content, and disease resistance. However, the information regarding the anatomical events that control their growth and maturation is surprisingly scarce. The aim of the present work was to study sunflower male and female sporogenesis and gametogenesis, as well as cell division and enlargement and tissue differentiation in the ovary and the embryo, linking the timing of these events to two frequently used phenological scales and a thermal time scale. In addition, we propose an ontogenetic scale that integrates the results of the present work to that of previous studies on sunflower reproductive development. The unified scales presented here provide a framework for others to investigate the relationships uncovered in this study in different genetic backgrounds and under different growing conditions.

Conserved topological patterns and heterochronies in loliginid cephalopods: comparative developmental morphology of the oval squidSepioteuthis lessoniana

Invertebrate Reproduction & Development ◽

10.1080/07924259.2001.9652481 ◽

2001 ◽

Vol 39 (3) ◽

pp. 161-174 ◽

Cited By ~ 3

Author(s):

SHUICHI SHIGENO ◽

KOTARO TSUCHIYA ◽

SUSUMU SEGAWA

Keyword(s):

Developmental Morphology

Developmental Morphology of the Small Intestine of African Ostrich Chicks

Poultry Science ◽

10.3382/ps.2008-00163 ◽

2008 ◽

Vol 87 (12) ◽

pp. 2629-2635 ◽

Cited By ~ 35

Author(s):

J.X. Wang ◽

K.M. Peng

Keyword(s):

Small Intestine ◽

Developmental Morphology

Developmental morphology and taxonomy of Medeiothamnion flaccidum (Hooker f. & Harvey) comb. nov. (Ceramiaceae, Rhodophyta) from South America

Phycologia ◽

10.2216/i0031-8884-18-4-338.1 ◽

1979 ◽

Vol 18 (4) ◽

pp. 338-346

Author(s):

John F. Brauner

Keyword(s):

South America ◽

Developmental Morphology