scholarly journals Difference of Photosynthetic Rates among the Leaves at the Equivalent Positions on the Main Stem and Its Tillers in Rice Plants.

1991 ◽  
Vol 60 (3) ◽  
pp. 413-420 ◽  
Author(s):  
Taiichiro OOKAWA ◽  
Eiki KURODA ◽  
Kuni ISHIHARA
Keyword(s):  
Main Stem ◽  
Photosynthetic Rates ◽  
Rice Plants

scholarly journals Varietal Differences in Photosynthetic Rates in Rice Plants, with Special Reference to the Nitrogen Content of Leaves

2010 ◽  
Vol 13 (1) ◽  
pp. 53-57 ◽  
Author(s):  
Tadashi Hirasawa ◽  
Satomi Ozawa ◽  
Renante Taylaran ◽  
Taiichiro Ookawa
Keyword(s):  
Special Reference ◽  
Nitrogen Content ◽  
Varietal Differences ◽  
Photosynthetic Rates ◽  
Rice Plants

Acclimation of Palmer Amaranth (Amaranthus palmeri) to Shading

Weed Science ◽  
2008 ◽  
Vol 56 (5) ◽  
pp. 729-734 ◽  
Author(s):  
Prashant Jha ◽  
Jason K. Norsworthy ◽  
Melissa B. Riley ◽  
Douglas G. Bielenberg ◽  
William Bridges
Keyword(s):  
Palmer Amaranth ◽  
Main Stem ◽  
Branch Number ◽  
Photosynthetic Rates ◽  
Full Sunlight ◽  
Appearance Rate ◽  
Rate Of Increase ◽  
Leaf Appearance Rate ◽  
Leaf Appearance ◽  
Shade Plants

Experiments were conducted to investigate the acclimation of Palmer amaranth to shading. Plants were grown in the field beneath black shade cloths providing 47 and 87% shade and in full sunlight (no shading). All photosynthetic measurements were taken 4 wk after initiating the shade treatments. Photosynthetic rates of Palmer amaranth grown under 47% shade increased with increasing photosynthetic active radiation (PAR) similar to 0% shade-grown plants. Light-saturated photosynthetic rates were predicted beyond the highest measured PAR of 1,200 µmol m−2s−1for plants grown under 0 and 47% shade. Plants acclimated to increased shading by decreasing light-saturated photosynthetic rates from 60.5 µmol m−2s−1under full sun conditions to 26.4 µmol m−2s−1under 87% shade. Plants grown under 87% shade lowered their light compensation point. Rate of increase in plant height was similar among shade treatments. Plants responded to increased shading by a 13 to 44% reduction in leaf appearance rate (leaf number growing degree days [GDD]−1) and a 22 to 63% reduction in main-stem branch appearance rate (main-stem branch number GDD−1) compared with full sunlight. Palmer amaranth specific leaf area increased from 68 to 97 cm2g−1as shading increased to 87%. Plants acclimated to 47% shade by increasing total leaf chlorophyll from 22.8 µg cm−2in full sunlight to 31.7 µg cm−2when shaded; however, the increase was not significant at 87% shading. Thus, it is concluded that Palmer amaranth shows photosynthetic and morphological acclimation to 87% or less shading.

scholarly journals Developmental differences in rice plants in relation to photoperiodism.

1953 ◽  
Vol 1 (3) ◽  
pp. 202-216
Author(s):  
C. Coolhaas ◽  
Th.M. Wormer
Keyword(s):  
Subsequent Development ◽  
Morphological Characters ◽  
Developmental Differences ◽  
Reproductive Stage ◽  
Main Stem ◽  
Axillary Buds ◽  
Direct Influence ◽  
Rice Plants ◽  
Growing Period ◽  
Stages Of Growth

Two varieties of rice sensitive to the length of photoperiod, Nero di Vialone and Kameji, and 2 insensitive varieties, Fortuna and Karang Serang, were subjected to daily photoperiods of 12 and 18 hr. applied either throughout the growing period or at various stages of the growing period. Earlier formation of panicles was induced by 12 hr. than by 18 hr. photoperiods in the case of Nero di Vialone and Kameji, but not in the case of Fortuna and Karang Serang. Where early flowering was induced by the use of 12 hr. photoperiods the panicles on the main stem were smaller than corresponding panicles on plants grown with 18 hr. photoperiods. The length of photoperiod had no direct influence on the growth of leaves. In the case of the sensitive variety Nero di Vialone, all tillers subjected to 12 hr. photoperiods from the beginning of growth entered the reproductive stage, after which a proportion of them ceased development, whereas a proportion of the tillers subjected to 18 hr. photoperiods from the beginning of growth ceased development before they had formed an inflorescence. A change from 12 hr. to 18 hr. photoperiods in sensitive varieties at the time of initiation of inflorescences caused a delay, and a change from 18 hr. to 12 hr. photoperiods, a hastening, of the subsequent development of flowers. The morphological characters of the axillary buds of rice plants at various stages of growth are described.-W.J.B. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Formation of Crown Root Primordia in Unelongated Portions of the Main Stem and Tillers in Rice Plants.

1998 ◽  
Vol 67 (4) ◽  
pp. 543-548 ◽  
Author(s):  
Youji NITTA ◽  
Yoshinori YAMAMOTO ◽  
Takashi NAGAMI
Keyword(s):  
Main Stem ◽  
Root Primordia ◽  
Rice Plants ◽  
Crown Root

scholarly journals The Effect of Defoliating Tiller Leaves on the Crown Root Formation in the Main Stem of Rice Plants

1980 ◽  
Vol 49 (4) ◽  
pp. 587-592 ◽  
Author(s):  
Shin-ichiro KAWATA ◽  
Jiro HARADA
Keyword(s):  
Root Formation ◽  
Main Stem ◽  
Rice Plants ◽  
Crown Root

Bipolar radiofrequency induced thermotherapy and 1064 nm Nd:Yag laser in endovenous occlusion of insufficient veins: short term follow up results

VASA ◽  
2011 ◽  
Vol 40 (3) ◽  
pp. 235-240 ◽  
Author(s):  
Krnic ◽  
Sucic
Keyword(s):  
Side Effects ◽  
Success Rate ◽  
Nd:Yag Laser ◽  
Main Stem ◽  
Short Term ◽  
Main Trunk ◽  
Bipolar Radiofrequency ◽  
Saphenous Veins ◽  
Skin Redness ◽  
Complete Failure

Background: The aim of this study is to report our results in main stem vein closure using the bipolar radiofrequency induced thermotherapy (RFITT) system and the 1064nm Nd:Yag laser. Patients and methods: 44 incompetent main stem veins (37 great saphenous veins, one lesser saphenous vein, and 6 anterior accessory saphenous veins) in 29 patients were treated using RFITT. 53 incompetent main stem veins (45 great saphenous veins, 4 lesser saphenous veins, and 4 anterior accessory saphenous veins) in 43 patients were treated endovenously with 1064 nm Nd:Yag laser. All patients underwent postoperative duplex scanning within a month after procedure, as well as a short interview regarding postoperative discomfort. Results: In main stem veins treated with RFITT, the success rate within the first month was 86,4 % (38 out of 44 veins). Complete failure rate was 13,6 % (6 out of 44 veins). In 53 main stem veins treated by 1064 nm Nd:Yag laser, the success rate was 100 %, consisting of 98,1 % complete success (52/53 veins), and 1,9 % partial success (1/53 veins). None of the patients treated with RFITT experienced postoperative adverse effects, whereas 13/43 (30,2 %) patients treated with laser had to use oral analgesics after the treatment, and 21/43 (48,8 %) patients reported transient skin changes, such as bruising or skin redness. Conclusions: RFITT system was fairly efficient in the short term for closure of main trunk veins, whereas longer term results are still scarce. Postoperative side effects of RFITT were minimal. 1064nm Nd:Yag laser, according to short term results, proved to be very effective for main stem vein closure. Postoperative side effects related to 1064 nm Nd:Yag endovenous laser treatment proved to be minor, transient, and acceptable.

Regulation of plastid photosynthetic psbK-I-D-C gene expression by light in rice plants

1995 ◽  
Vol 93 (4) ◽  
pp. 617-623 ◽  
Author(s):  
Shu-Chen Grace Chen ◽  
Sang-Pin Wu ◽  
Pang-Kuo Lo ◽  
Dir-Pu Mon ◽  
Long-Fang Oliver Chen
Keyword(s):  
Gene Expression ◽  
Rice Plants

Early onset isolated ostial left-main-stem stenosis after breast cancer radiation report of a case and review of literature

2012 ◽  
Vol 60 (S 01) ◽  
Author(s):  
M Wilbring ◽  
SM Tugtekin ◽  
S Schön ◽  
D Joskowiak ◽  
K Matschke ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Early Onset ◽  
Main Stem ◽  
Review Of Literature ◽  
Left Main ◽  
Left Main Stem
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