The Movement of 14C-Labelled Products from Source Leaves During the Growth and Development of Broad Bean

1984 ◽  
Vol 20 (4) ◽  
pp. 311-318
Author(s):  
A. M. A. Ismail
Keyword(s):  
Developmental Stage ◽  
Growth And Development ◽  
Broad Bean ◽  
Bean Plant ◽  
Vegetative Phase ◽  
Bidirectional Transport

SUMMARYSelected leaves of broad bean on separate plants were supplied with 14CO2, at four stages during development and the distribution of radiocarbon products determined quantitatively 24 h later. These leaves retained substantial amounts of the radiocarbon they fixed initially. In the vegetative phase, basal and middle leaves exported more carbon up than down while the apical leaves exported mainly downwards. During the flowering and pod-setting phase, basal and middle leaves exported carbon equally up and down whereas the apical leaves continued to export mainly downwards. Since assimilates produced by basal, middle and apical leaves at any developmental stage in the life of the broad bean plant were moved both acropetally and basi-petally, it must be concluded that bidirectional transport of assimilates occurred in the stem. During the life of the crop all sources supplied assimilates to all sinks.

Inhibition by Sethoxydim of Chloroplast Biogenesis, Development and Replication in Barley Seedlings

1984 ◽  
Vol 39 (1-2) ◽  
pp. 115-122 ◽  
Author(s):  
Hartmut K. Lichtenthaler ◽  
Dieter Meier
Keyword(s):  
Developmental Stage ◽  
Growth And Development ◽  
Leaf Growth ◽  
Shoot Meristem ◽  
Chloroplast Biogenesis ◽  
Stages Of Development ◽  
Mesophyll Cells ◽  
Chloroplast Replication ◽  
Ultrastructural Characteristics ◽  
Differentiation Stage

Abstract Chloroplast Biogenesis, Inhibition of Chloroplast Replication, Sethoxydim. Sun-Type Chloroplast Sethoxydim not only blocks leaf growth and development of barley seedlings but also inhibits chloroplast biogenesis at all stages of development from proplastids to prochloroplasts, young and mature chloroplasts. Not only thylakoid synthesis, thylakoid multiplication and grana for­mation are affected, but also chloroplast replication. The chloroplasts of secondary leaves which before the sethoxydim application are in the stage of young, developing chloroplasts, remain in this differentiation stage when treated with sethoxydim. With their ultrastructural characteristics (e.g. lower stacking degree, higher proportion of exposed membranes, a lower thylakoid frequency etc.) they resemble sun-type chloroplasts. In the shoot meristem sethoxydim-treated plants contain only proplastids, whereas the plastids in the shoot meristem of control plants are already in the developmental stage between prochloroplasts to young chloroplasts. Mesophyll cells of sethoxydim-treated plants contain only one third of the chloroplasts found in the controls.

Interrelations in the growth and development of Lolium. I. Some effects of vernalization on growth and development

1965 ◽  
Vol 16 (6) ◽  
pp. 903 ◽  
Author(s):  
JH Silsbury
Keyword(s):  
Low Temperature ◽  
Growth Rates ◽  
Growth And Development ◽  
Growth Curves ◽  
High Growth ◽  
Reproductive Development ◽  
Controlled Environment ◽  
Lolium Rigidum ◽  
Vegetative Phase ◽  
Reproductive Phase

The responses of Lolium rigidum Gaud. and L. perenne L. to low temperature seed vernalization were determined by comparing the growth and development of vernalized and unvernalized plants raised in the field and in a controlled environment cabinet. Vernalization did not appear to influence growth in the vegetative phase, but usually induced earlier heading and a greater proportion of reproductive tillers. Comparisons of vernalized (reproductive) and unvernalized (vegetative) plants show increased reproductive development to be associated with higher growth rates, lower tillering, and greater weight per tiller. High growth rates during the reproductive phase are considered to be due to the ability of reproductive tillers to grow more rapidly than vegetative tillers through the growth of true stem functioning as a "sink" for assimilate. Generalized growth curves for vernalized and unvernalized ryegrass grown under long days are presented and discussed.

scholarly journals Incidence of Rust, Powdery Mildew and Wilt in Pea and Broad bean Plant of Manipur, India

2017 ◽  
Vol 6 (8) ◽  
pp. 2611-2616 ◽  
Author(s):  
Nabakishor Nongmaithem ◽  
Ch. Basudha ◽  
Susheel Kumar Sharma
Keyword(s):  
Powdery Mildew ◽  
Broad Bean ◽  
Bean Plant

Models of growth and development of wheat in relation to plant nitrogen

1985 ◽  
Vol 36 (4) ◽  
pp. 537 ◽  
Author(s):  
JF Angus ◽  
MW Moncur
Keyword(s):  
Developmental Stage ◽  
Growth And Development ◽  
Growth Response ◽  
Dynamic Models ◽  
Nitrogen Concentration ◽  
Developmental Rate ◽  
Plant Nitrogen ◽  
Nitrogen Concentrations ◽  
Whole Plants ◽  
Rates Of Growth

Wheat plants were grown in culture solutions differing in nitrogen concentration and transferred between the solutions at the time of floral initiation. Rates of growth and development were expressed in relation to the nitrogen concentrations of the whole plants. Growth rate increased and developmental rate decreased with increased plant nitrogen concentration, the extent depending on the developmental stage when the nitrogen was supplied, the duration of supply, and the concentration of nitrogen in the solution. Simple dynamic models fitted to the data accounted for 97% of the variation in observed biomass and 93% of the variation in rate of development. The models are based on a concept of relative nitrogen concentration, an expression of the actual nitrogen concentration of the plant in relation to the maximum and minimum possible nitrogen concentrations at a particular developmental stage. The models suggest possibilities for calculating the growth response to nitrogen fertilizer applied at any time during the development of a crop.

دور السيلينيوم في تحمل نبات الباقلاء L.Viciafaba للإجهاد الملحي = Role of Selenium in Tolerance of Broad Bean Plant Vicia Faba L. to Salinity Stress

2017 ◽  
Vol 12 (2) ◽  
pp. 53-58
Author(s):  
أمل غانم محمود القزاز ◽  
رهف وائل محمود عطار باشي ◽  
إيمان حسين هادي الحياني
Keyword(s):  
Vicia Faba ◽  
Salinity Stress ◽  
Broad Bean ◽  
Bean Plant ◽  
Vicia Faba L
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