scholarly journals Effects of maturity group and stem growth habit on the branching plasticity of soybean cultivars grown at various planting densities

2020 ◽  
Vol 23 (4) ◽  
pp. 385-396
Author(s):  
Taiki Yoshihira ◽  
Song Liang ◽  
Haruka Suzuki ◽  
Takuya Kitabatake ◽  
Tatsuhiko Shiraiwa
Keyword(s):  
Growth Habit ◽  
Stem Growth ◽  
Maturity Group ◽  
Soybean Cultivars

scholarly journals DEFOLIATION LEVELS AT VEGETATIVE AND REPRODUCTIVE STAGES OF SOYBEAN CULTIVARS WITH DIFFERENT RELATIVE MATURITY GROUPS

2020 ◽  
Vol 33 (2) ◽  
pp. 402-411
Author(s):  
MURILO MIGUEL DURLI ◽  
LUIS SANGOI ◽  
CLOVIS ARRUDA SOUZA ◽  
LUCIELI SANTINI LEOLATO ◽  
THAIS LEMOS TUREK ◽  
...  
Keyword(s):  
Grain Yield ◽  
Growth Habit ◽  
Leaf Expansion ◽  
Maturity Group ◽  
Indeterminate Growth ◽  
Soybean Cultivars ◽  
Indeterminate Growth Habit ◽  
Determinate Growth ◽  
Determinate Growth Habit ◽  
Expansion Capacity

ABSTRACT Soybean tolerance to defoliation may be affected by relative maturity group (RMG) of the cultivar. For this reason, this study was carried out to evaluate the effects of artificial defoliation at vegetative and reproductive stages on the agronomic performance of soybean cultivars with different RMG. Two experiments were carried out in greenhouse conditions in Lages, Santa Catarina State, Brazil. Defoliation was carried out at V6 in the first experiment and at R3 in the second experiment. Three cultivars with contrasting RMG were used: BMX Veloz (RMG of 5.0, indeterminate growth habit), NA 5909 (RMG of 5.9, indeterminate growth habit), and TMG 7262 (RMG of 6.2, semi-determinate growth habit). Each cultivar was submitted to five defoliation levels: 0.0, 16.6, 33.3, 50.0, and 66.6%. Leaf expansion after defoliation, grain yield and its components were determined. The BMX Veloz showed lower leaf expansion capacity and lower grain yield when compared to the other cultivars when defoliated at V6. Grain yield of the three cultivars only showed significant decreases with defoliation levels higher than 16.6% at R3. The cultivar BMX Veloz is less tolerant to defoliation during the vegetative stage when compared to the cultivars NA 5909 and TMG 7262. Cultivar maturity group does not interfere with soybean tolerance to defoliation at the reproductive stage in greenhouse conditions.

Initiation, Development and Anatomy of Lignotubers in Some Species of Eucalyptus

1984 ◽  
Vol 32 (4) ◽  
pp. 415 ◽  
Author(s):  
DJ Carr ◽  
R Jahnke ◽  
SGM Carr
Keyword(s):  
Analytical Study ◽  
Growth Habit ◽  
Stem Growth ◽  
Morphological Development ◽  
Alternative Pathways ◽  
Stem Wood ◽  
Initial Survey ◽  
And Performance ◽  
Lateral Fusion ◽  
Taxonomic Groups

An initial survey of the diversity of early lignotuber development in Eucalyptus and an analytical study of the anatomy of young lignotubers and the seedling stem are presented. Studies of the early stages of the morphological development of the lignotuber in 13 species, representative of five taxonomic groups, resulted in the recognition of four modes of lignotuber initiation. The importance to lignotuber formation of the presence of a suite of accessory buds, adaxial to the axillary bud, is emphasized but lignotuber initiation is not in all cases associated with these buds. Lignotuber buds are derived by branching from existing buds, ultimately from the accessory buds of the node. Following its initiation, the possibilities of later morphological development of the lignotuber are discussed. Lignotuber growth may dominate over stem growth and the lignotubers at a node may then fuse laterally to encircle the stem. Stem growth, on the other hand, may dominate over lignotuber growth and the lignotuber then appears to regress. The consequences for the growth habit of the plant of these alternative pathways of development are outlined. The wood of young lignotubers (and that of the swollen hypocotyl) is shown to be different in composition and in the sizes of its elements from that of seedling stem wood; these differences owe their origin to differences in the nature and performance of the cambia of the lignotuber and stem. In lateral fusion of the lignotubers at a node, and their upward and downwards extension over the stem, e.g. over the hypocotyl, stem cambial initials are either progressively lost or, more likely, converted to lignotuber-type initials. The possibility of the reverse process occumng in stem dominance is discussed.

scholarly journals Stem growth habit affects leaf morphology and gas exchange traits in soybean

2009 ◽  
Vol 104 (7) ◽  
pp. 1293-1299 ◽  
Author(s):  
Yu Tanaka ◽  
Tatsuhiko Shiraiwa
Keyword(s):  
Gas Exchange ◽  
Leaf Morphology ◽  
Growth Habit ◽  
Stem Growth

scholarly journals Molecular mechanisms of flowering under long days and stem growth habit in soybean

2016 ◽  
pp. erw394 ◽  
Author(s):  
Dong Cao ◽  
Ryoma Takeshima ◽  
Chen Zhao ◽  
Baohui Liu ◽  
Abe Jun ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Growth Habit ◽  
Stem Growth

scholarly journals Determinate growth habit of grain legumes: role in domestication and selection, genetic control

2020 ◽  
Author(s):  
Ekaterina Krylova ◽  
Elena Khlestkina ◽  
Marina Burlyaeva ◽  
Margarita Vishnyakova
Keyword(s):  
Common Bean ◽  
Growth Habit ◽  
Molecular Genetic ◽  
Grain Legumes ◽  
Stem Growth ◽  
Shoot Meristem ◽  
Cultivated Plants ◽  
Genetic Mechanisms ◽  
Determinate Growth ◽  
Determinate Growth Habit

This review is devoted to the analysis of molecular genetic mechanisms of controlling the type of growth habit of grain legumes (pea, soybean, common bean, vigna); it provides information on the known homologous genes TFL1, LFY, AP1, FUL, FT, and FD. Significant changes in plant architecture were during domestication of grain legumes. Many wild relatives of legumes are characterized by an indeterminate growth habit type, cultivated plants are characterized by indeterminate and determinate types. In plants with a determinate growth habit type, terminal inflorescence is formed at transition from the vegetative phase to the reproductive phase. These plants are characterized by a complex of features: simultaneous maturation of beans, resistance to lodging, etc. In indeterminate type of growth habit, the apical shoot meristem remains active during plant life. The main genes responsible for the plant transition to flowering are the homologs of the Arabidopsis genes LFY, TFL1, AP1. TFL1 gene is responsible for maintaining of growth of the shoot apical meristem; its homologs were identified in pea (PsTFL1a), soybean (Dt1/ GmTfl1), common bean (PvTFL1y), cowpea (VuTFL1). The identification and characterization of the genes responsible for the type of stem growth habit are necessary for the successful selection of modern varieties suitable for mechanized cultivation. Design of molecular markers that diagnose this important breeding trait at early plant development stages, will help determine the type of stem growth habit.

EDIBLE PINK-FRUITED TOMATO (LYCOPERSICON ESCULENTUM MILL. CONVAR. ESCULENTUM VAR. ROSEUM KHRAP.): SOURCE MATERIAL FOR BREEDING

2020 ◽  
Author(s):  
I.A. KHRAPALOVA ◽  
Keyword(s):  
Lycopersicon Esculentum ◽  
Growth Habit ◽  
Agronomic Traits ◽  
Fruit Shape ◽  
Stem Growth ◽  
Local Varieties ◽  
Lycopersicon Esculentum Mill ◽  
Inflorescence Morphology ◽  
Botanical Classification

This catalogue contains a description of morphological, biological and useful agronomic traits in 153 accessions of cultivated edible tomato (Lycopersicon esculentum Mill.) with pink fruits from the VIR collection. The data were obtained in the course of many years in winter rack glasshouses and plastic greenhouses at Pushkin and Pavlovsk Laboratories of VIR (St. Petersburg). The catalogue has been intended to help breeders, researchers, experts and farmers in gaining knowledge about pink-fruited tomato genetic resources that have been accumulated in the VIR collection for almost a hundred years. Cultivars developed through scientific breeding and local varieties are quite diverse in their earliness, fruit shape and size, stem growth habit and pattern, leaf and inflorescence morphology, etc. Their diversity described in the catalogue has been systemized in accordance with the botanical classification developed by the author of the catalogue on the basis of long-term research into the collection.

scholarly journals The Soybean Stem Growth Habit Gene Dt1 Is an Ortholog of Arabidopsis TERMINAL FLOWER1

2010 ◽  
Vol 153 (1) ◽  
pp. 198-210 ◽  
Author(s):  
Baohui Liu ◽  
Satoshi Watanabe ◽  
Tomoo Uchiyama ◽  
Fanjiang Kong ◽  
Akira Kanazawa ◽  
...  
Keyword(s):  
Growth Habit ◽  
Stem Growth
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