scholarly journals Efficient Dry Matter Production at the Vegetative Stage because of Low Maintenance Respiration Rate among Rice Varieties.

2002 ◽  
Vol 71 (1) ◽  
pp. 110-115 ◽  
Author(s):  
Yoshihiko HIRAI ◽  
Makoto TSUDA ◽  
Atsushi ENAIDA
1992 ◽  
Vol 61 (1) ◽  
pp. 62-73 ◽  
Author(s):  
Kuniyuki SAITO ◽  
Hiroyuki SHIMODA ◽  
Kuni ISHIHARA

1991 ◽  
Vol 60 (2) ◽  
pp. 255-263 ◽  
Author(s):  
Kuniyuki SAITO ◽  
Sinya KASIWAGI ◽  
Takahiro KINOSITA ◽  
Kuni ISHIHARA

2016 ◽  
Vol 14 (1) ◽  
pp. 37-45
Author(s):  
R Yasmeen ◽  
S Akter ◽  
T Halder ◽  
A Biswas ◽  
MM Rahman ◽  
...  

The experiment was conducted to study the performance of three T. Aman varieties (BR22, BRRI dhan46 and BRRI dhan49) under normal transplanting with 30, 45 and 60 days old seedlings and double transplanting ( 30 days + 30 days) system at Plant Physiology Division of Bangladesh Rice Research Institute, Joydebpur, Gazipur during T. Aman season, 2013. Interaction effect was significant only for days to maximum flowering and sterility percentage. BR22 required longer duration to complete flowering when transplanted with 60 days old seedlings, while sterility percentage was higher in BRRIdhan 49 when transplanted with same aged seedlings. Photosynthetic rate, LAI, total dry matter production, yield contributing characters and harvest index of tested varieties were insignificant under different transplanting methods; these parameters contributed to produce similar grain yield. The results revealed that rice varieties BR22, BRRI dhan46 and BRRI dhan49 showed similar performance under normal transplanting with different aged seedlings and double transplanting in respect of photosynthetic rate, tillering pattern, LAI, total dry matter production and grain yield during T. Aman season.SAARC J. Agri., 14(1): 37-45 (2016)


1991 ◽  
Vol 42 (3) ◽  
pp. 347 ◽  
Author(s):  
BR Whan ◽  
GP Carlton ◽  
WK Anderson

Increased early vigour and vegetative biomass at anthesis should lead to yield improvements in wheat. Fifteen introductions were compared with five standard cultivars in Western Australia at Wongan Hills in 1988, and Wongan Hills, Merredin and Esperance in 1989 to identify useful parents for their early vigour and biomass production. Two times of sowing were included at Wongan Hills in 1989. Dry matter production was measured at all sites except Esperance at the early vegetative stage (49 to 55 days after sowing), late vegetative stage (56 to 75 days after sowing), and at anthesis. Some introductions were more vigorous in the vegetative stages, and produced more biomass at anthesis than the standard cultivars. Experiments under irrigated, non-stress conditions showed these lines produced leaves and tillers more quickly than the standard cultivars. The full growth potential of these lines may not have been expressed fully due to environmental limitations. While variation for dry matter production existed within the standard cultivars, it was not adequate or consistent enough to be of value in breeding. Dry matter production at the vegetative and anthesis stages was correlated significantly with grain yield in 1989, but not in 1988. Broad sense heritabilities for dry matter production at the three stages were generally high, averaging 72, 73 and 69% for early vegetative, late vegetative and anthesis dry matter production respectively. The importance of assessing the value of early vigour and biomass in breeding populations is discussed.


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