scholarly journals Analysis of the Relationship between Leaf-Emergence Date and Length of Organs on the Main Culm in Rice Plant under a Given Environmental Condition.

1997 ◽  
Vol 66 (3) ◽  
pp. 394-401
Author(s):  
Satoshi MORITA ◽  
Katsuya MATSUBA
1980 ◽  
Vol 185 (2) ◽  
pp. 405-409 ◽  
Author(s):  
J S Bacon

Samples of beech (Fagus sylvatica) leaves were taken from the time of leaf emergence until leaf fall. They were extracted with boiling aqueous ethanol and the residues analysed for their acetyl-group content and their content of sugars released by acid hydrolysis. The accumulation of acetyl groups closely paralled that of xylose, and the two were present in approximately equimolecular proportions, except during the period of leaf expansion, when the acetyl-group/xylose ratio exceeded 3:2. The galactose present in each leaf reached a maximum as leaf expansion ceased and then declined during the period of rapid xylose accumulation. The results are discussed in relation to the known association of acetyl groups with xylans and pectic substancesand to the disappearance of constituents during cell-wall maturation.


1984 ◽  
Vol 53 (3) ◽  
pp. 313-319 ◽  
Author(s):  
Jiro HARADA ◽  
Koou YAMAZAKI ◽  
Tai-ichiro UMEDA ◽  
Akira MIYAKE ◽  
Tomomi NAKAMOTO

Author(s):  
Nanang Nur Rozaq ◽  
Mochamad Sugiharto

The study on spatial dimension of buffalo development in Brebes is intended to (1) analyze the regional shifting patterns of buffalo development within a period of 5 years (2012-2016) and (2) to identify the relationship between the number of farmland areas and the population of buffalo in Brebes Regency. This research employs a secondary data analysis method by utilizing the available data analyzed using a spatial analysis. Location Quotient (LQ) analysis is conducted to analyze the regional shifting patterns of buffalo followed with a product moment correlation analysis to identify the relationship between the number of farmland areas and the population of buffalo livestock. The results show that the buffalo population is related to the number of ​​rice plant areas (P <0.05) as well as that of the peanut plant areas (P <0.01). For the last 5 years (2012-2016), there is no regional shifting pattern in the center for buffalo development in Brebes Regency. The centralization of buffalo develoment in Brebes Regency is located in Salem, Bumiayu, Sirampog, Tonjong, Larangan and Songgom sub-district


2014 ◽  
Vol 57 (4) ◽  
pp. 431-445 ◽  
Author(s):  
Norman R. Dollahon ◽  
Andrew B. Maksymowych ◽  
Maria Galanti ◽  
Joseph A. Orkwiszewski

A scanning electron microscope study of the fine structure of coleoptiles of <em>Avena sativa</em> L. cv. Clintford has revealed information about the relationship between aspects of coleoptilar structure and the emergence of the primary leaf. Stomata are located on the lateral sides of the coleoptile and arch across the apex. The location of the stomata and associated vascular tissue may play a role in the splitting of the coleoptile pore and influence the manner in which the primary leaf emerges. Details of the surface fine structure of the coleoptile pore, its associated cells, stomata and guard cells are presented.


1972 ◽  
Vol 41 (1) ◽  
pp. 93-101 ◽  
Author(s):  
Kuni ISHIHARA ◽  
Ryuichi SAGO ◽  
Tadaharu OGURA ◽  
Tadahiro USHIJIMA ◽  
Tadayoshi TAZAKI

Author(s):  
N. Tsenov ◽  
T. Gubatov ◽  
I. Yanchev

Abstract. Wheat is a crop with a very long growing season, during which it is subjected to prolonged exposure to many environmental factors. For this reason, the interaction of genotype with conditions is very common for any character of wheat. This study aims to determine whether the grain yield is affected by the change of the ear emergence date (EED) in various environments. In a four-year period, 30 current for national real grain production winter wheat varieties were studied. The EED and grain yield (GY) were studied as quantitative traits within five locations of the country having various soil and climatic conditions. Using several statistical programs, genotype x environment interaction of two traits was analyzed. The emphasis on data analysis was whether changes of traits due to the conditions were related and that the optimization of the ear emergence date could serve as a breeding tool for increasing grain yield. The date of ear emergence and grain yield are traits that are reliably influenced by growing conditions. The change in the date of emergence is mainly of the linear type, while the grain yield shows linear and nonlinear type changes in the same environmental conditions. It was found that the key roles in the change of characteristics are the conditions of the year, with the relatively weakest impact of the genotype on them. There is a positive relationship between the two traits, although their change depends on environmental factors. Although they change to different degrees and in relation to each other, there is a positive correlation between them. The more favorable the environmental conditions, the weaker the relationship between these two traits and vice versa. Under changing climatic conditions, the change in the relationship between the two traits is a signal of the need to create different varieties by date of ear emergence in order to obtain higher yields in the future.


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