scholarly journals Studies on the regrowth of rice plant shoots. I. Difference of regrowth obtained from the cuttings in young panicle-development stage.

1987 ◽  
Vol 56 (4) ◽  
pp. 467-473 ◽  
Author(s):  
Yusuke GOTO ◽  
Kiyochika HOSHIKAWA
Keyword(s):  
Rice Plant ◽  
Development Stage ◽  
Panicle Development ◽  
Young Panicle ◽  
Plant Shoots

scholarly journals Effect of Seedling Nitrogen Condition on Subsequent Vegetative Growth Stages and Its Relationship to the Expression of Nitrogen Transporter Genes in Rice

Plants ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 861
Author(s):  
Hue Thi Nong ◽  
Ryota Tateishi ◽  
Chetphilin Suriyasak ◽  
Takuya Kobayashi ◽  
Yui Oyama ◽  
...  
Keyword(s):  
Vegetative Growth ◽  
Development Stage ◽  
Seedling Stage ◽  
Growth Stages ◽  
Rice Seedlings ◽  
N Content ◽  
Balanced Growth ◽  
N Limitation ◽  
Panicle Development ◽  
Common Problems

Nitrogen (N) deficiency is one of the most common problems in soils, limiting crop growth and production. However, the effects of N limitation in seedlings on vegetative growth remain poorly understood. Here, we show that N limitation in rice seedlings restricted vegetative growth but not yield. Aboveground parts were affected mainly during the period of tillering, but belowground parts were sensitive throughout vegetative growth, especially during panicle development. At the tillering stage, N-limited plants had a significantly lower N content in shoots, but not in roots. On the other hand, N content in roots during the panicle development stage was significantly lower in N-limited plants. This distinct response was driven by significant changes in expression of N transporter genes during growth. Under N limitation, N translocation from roots to shoots was greatly sped up by systemic expression of N transporter genes to obtain balanced growth. N limitation during the seedling stage did not reduce any yield components. We conclude that the N condition during the seedling stage affects physiological responses such as N translocation through the expression of N transporter genes.

scholarly journals Water deficit during panicle development in pearl millet: yield compensation by tillers

1986 ◽  
Vol 106 (1) ◽  
pp. 113-119 ◽  
Author(s):  
V. Mahalakshmi ◽  
F. R. Bidinger
Keyword(s):  
Water Stress ◽  
Grain Yield ◽  
Water Deficit ◽  
Pearl Millet ◽  
Yield Loss ◽  
Development Stage ◽  
Compensatory Mechanism ◽  
Main Shoot ◽  
Panicle Development ◽  
Stress Damage

SUMMARYWater deficit during the panicle development stage reduced the grain yield of the main shoot panicle of pearl millet but this loss was compensated by increased grain yield of the tillers. The potential extent of compensation in grain yield components by tillers was investigated by removing the main shoot at panicle initiation (PI) and flowering stages respectively, for both irrigated and water-stressed plants. Grain yield loss by removal of the main shoot of plants at PI was fully compensated by tiller grain yield in both the irrigated and water-stressed plants. The compensation was, however, only partial when the main shoot was removed at flowering. The compensation for the grain yield loss in the main shoot due to either water stress or removal was through an increase in number of grains on the tillers. This increase was due to an increase in the number of productive tillers in the case of water stress and to both an increase in the number of productive tillers and an increase in the number of grains per panicle in the case of main shoot removal. This compensatory mechanism by tillers plays an important role in overcoming the effects of pre-flowering water stress damage to the main shoot.

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