Plantlet regeneration from somatic hybrids of rice (Oryza sativa L.) and barnyard grass (Echinochloa oryzicola Vasing)

1987 ◽  
Vol 210 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Rie Terada ◽  
Junko Kyozuka ◽  
Soryu Nishibayashi ◽  
Ko Shimamoto
Keyword(s):  
Oryza Sativa ◽  
Somatic Hybrids ◽  
Oryza Sativa L ◽  
Plantlet Regeneration ◽  
Barnyard Grass

Identification of allelopathic compounds from rice (Oryza sativa L.) straw and their biological activity

2001 ◽  
Vol 81 (4) ◽  
pp. 815-819 ◽  
Author(s):  
I. M. Chung ◽  
J. K. Ahn ◽  
S. J. Yun
Keyword(s):  
Biological Activity ◽  
Oryza Sativa ◽  
High Performance ◽  
Hplc Analysis ◽  
Oryza Sativa L ◽  
Dry Weight ◽  
Inhibitory Effect ◽  
Hydroxybenzoic Acid ◽  
Barnyard Grass ◽  
Allelopathic Compounds

Experiments were conducted to identify allelochemicals from rice (Oryza sativa L.) straw extracts of four rice cultivars (Gin shun, Kasawala mundara, Philippine 2 and Juma 10), and to test their biological activity on barnyard grass (Echinochloa crus-galli P. Beauv. var. oryzicola Ohwi). High performance liquid chromatography (HPLC) analysis showed that the concentration and composition of allelopathic compounds depended on the cultivar. Among the compounds identified were p-hydroxybenzoic acid at 6.87 mg g–1 in Gin shun, p-coumaric acid at 0.34 mg g–1 in Kasawala mundara, ferulic acid at 0.05 mg g–1 in Philippine 2, and p-hydroxybenzoic acid at 6.34 mg g–1 in Juma 10. Preliminary identification by HPLC analysis resulted in peaks with retention times near those of standards, including p-hydroxybenzoic acid m/z = 138). This was confirmed with electron impact/mass spectra. In a bioassay with nine known allelochemicals and their mixtures, p-hydroxybenzoic acid (10–3 M) showed the greatest inhibitory effect on barnyard grass seed germination, seedling length, and dry weight. This suggests that this compound may be a key factor in rice allelopathy on barnyard grass. Key words: Allelopathic compound, rice, barnyard grass, bioassay

scholarly journals Foliar application of methanol influences on growth and yield of rice (Oryza sativa L.) under different barnyard grass (Echinochloa crus-galli) densities

2015 ◽  
Vol 33 (2) ◽  
pp. 69-75 ◽  
Author(s):  
Abouzar Abbasian ◽  
Bahram Mirshekari ◽  
Mohammad Naghi Safarzade Vishekaei ◽  
Varahram Rashidi ◽  
Hashem Aminpanah
Keyword(s):  
Oryza Sativa ◽  
Foliar Application ◽  
Oryza Sativa L ◽  
Growth And Yield ◽  
Barnyard Grass

Effect of l-proline and l-tryptophan on somatic embryogenesis and plantlet regeneration of rice (Oryza sativa L. cv. Pusa 169)

1993 ◽  
Vol 32 (3) ◽  
pp. 357-361 ◽  
Author(s):  
Constance N. Chowdhry ◽  
A. K. Tyagi ◽  
N. Maheshwari ◽  
S. C. Maheshwari
Keyword(s):  
Somatic Embryogenesis ◽  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Plantlet Regeneration

Intergeneric somatic hybrids of rice [Oryza sativa L. (+) Porteresia coarctata (Roxb.) Tateoka]

1999 ◽  
Vol 99 (3-4) ◽  
pp. 570-577 ◽  
Author(s):  
N. B. Jelodar ◽  
N. W. Blackhall ◽  
T. P. V. Hartman ◽  
D. S. Brar ◽  
G. Khush ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Somatic Hybrids ◽  
Oryza Sativa L ◽  
Porteresia Coarctata

Effect of intracellular 2,4-D concentration on plantlet regeneration of rice ( Oryza sativa L.) callus

1994 ◽  
Vol 42 (2-3) ◽  
pp. 364-366 ◽  
Author(s):  
K. Mitsuoka ◽  
H. Honda ◽  
X.-H. Xing ◽  
H. Unno
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Plantlet Regeneration
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