Abstract
This investigation was carried out at Bukit Merah Padi Experiment Station in malaya 1962 to 1963 under Colombo Plan. The results are summarized as follows. 1. The process of elongation of the organs showed a S-shaped curve (Fig. 1). The peak date of the principal elongation period was the mid-point of the mentioned S-shaped curve. The beginning or end date of the principal elongation period was subjected to the time when certain organs elongated and reached to 10 % or 90 % of final length. The peak date of the principal elongation period of related organs took place nearly about the same time as indicated below, (B0 : S1 : N2), (B1 : S2 : N8), (B2 : S3 : N4) and (B3 : S4 : N5) (See Tab. 1). The indicatin to each separate organs is explained in Fig. 2. All the numberings begin from the topmost part of plant descending to the base. Immediately after the peak date of the principal elongation period of leaf blades or sheaths, started the beginning date of the principal elongation period of the next upper organs and after the former reached the end date of its principal elongation period, started the peak date of the principal elongation period of the latter (Tab. 1, 3). 2. The changes in dry weight of organs also showed a S-shaped curve ( Fig. 3). The inter-relation among the different organs in respect of the changes in dry weight was more or less similar to that of the elongation process of organs (Tab. 1). 3. When the velocity of the elongation of a certain organ reached its maximum, the increase in dry weight was about to begin. When the increased dry weight reached its maximum, the elongation was about to terminate (Tab. 4-a, b). The elongation and increase in dry weight of organs continued to be systematic from the lower to the upper organs. 4. When the increase in the dry weight of panicle was great during the panicle pregnancy stage, there was naturally a reduction in the dry weight increase of the other organs. As soon as the formation of the panicle was about to be complete, N1 and N0 showed a marked increase in dry weight. After the fertilization there was a remarkable increase in dry weight of the panicle. As long as the increase in dry weight of the panicle was conspicuous, there was a decrease in the weight of sheaths and internodes. The decrease was slightly marked in Pe Bi Fun than Radin China 4. From then on, there was a slightly decline in the increasing tendency of dry weight of the panicle and also a halt in the decrease of the weight of sheaths and internodes. During about 5 days just after heading, the increasing weight of the panicle was small. This can reasonably be attributed to the effect probably caused by the enhanced consumption due to the respiration at the time of flowering and fertilization. 5. The peak date of the principal elongation period of each organs mentioned above were presumed. However, the full matured length or weight of certain organs varied with nutritional and environmental conditions. The above mentioned result on the regularity of elongation process and changes in dry matter was similar to that of Japonica rice plant. And it can be benificially used in the morphological and physiological diagnolosis of Indica rice plant.
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Claims 15
Claim · model-written summary
organ elongation followed an S-shaped curve
- Taxon
- Indica rice plant
Oryza sativa Indica Groupt0 - Outcome
- elongation of the organse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The process of elongation of the organs showed a S-shaped curve”
t0“Indica rice plant”
Claim · model-written summary
related organs reached peak elongation at nearly the same time
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- peak date of the principal elongation period of related organse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The peak date of the principal elongation period of related organs took place nearly about the same time”
t0“Indica rice plant”
Claim · model-written summary
organ dry weight changes followed an S-shaped curve
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- changes in dry weight of organse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The changes in dry weight of organs also showed a S-shaped curve”
t0“Indica rice plant”
Claim · model-written summary
dry-weight relations among organs resembled elongation relations
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- inter-relation among the different organs in respect of the changes in dry weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inter-relation among the different organs in respect of the changes in dry weight was more or less similar to that of the elongation process of organs”
t0“Indica rice plant”
Claim · model-written summary
dry weight began increasing as elongation velocity peaked
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- increase in dry weighte0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the velocity of the elongation of a certain organ reached its maximum, the increase in dry weight was about to begin”
t0“Indica rice plant”
Claim · model-written summary
elongation approached termination when dry-weight gain peaked
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- elongatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the increased dry weight reached its maximum, the elongation was about to terminate”
t0“Indica rice plant”
Claim · model-written summary
elongation and dry-weight gain progressed from lower to upper organs
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- elongation and increase in dry weight of organse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The elongation and increase in dry weight of organs continued to be systematic from the lower to the upper organs”
t0“Indica rice plant”
Claim · model-written summary
other organs gained less dry weight when panicle dry-weight gain was great
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- dry weight increase of the other organse0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the increase in the dry weight of panicle was great during the panicle pregnancy stage, there was naturally a reduction in the dry weight increase of the other organs”
t0“Indica rice plant”
Claim · model-written summary
N1 and N0 dry weight increased near completion of panicle formation
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- dry weighte0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As soon as the formation of the panicle was about to be complete, N1 and N0 showed a marked increase in dry weight”
t0“Indica rice plant”
Claim · model-written summary
panicle dry weight increased after fertilization
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- dry weight of the paniclee0
- Direction
- increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After the fertilization there was a remarkable increase in dry weight of the panicle”
t0“Indica rice plant”
Claim · model-written summary
sheath and internode weight decreased while panicle dry weight increased
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- weight of sheaths and internodese0
- Direction
- decreasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As long as the increase in dry weight of the panicle was conspicuous, there was a decrease in the weight of sheaths and internodes”
t0“Indica rice plant”
Claim · model-written summary
the decrease was less marked in Pe Bi Fun than Radin China 4
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Material
- Pe Bi Fune0
- Outcome
- decreasee0
- Comparator
- Radin China 4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decrease was slightly marked in Pe Bi Fun than Radin China 4”
t0“Indica rice plant”
Claim · model-written summary
panicle weight increased only slightly just after heading
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- increasing weight of the paniclee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During about 5 days just after heading, the increasing weight of the panicle was small”
t0“Indica rice plant”
Claim · model-written summary
mature organ length and weight varied with nutrition and environment
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- full matured length or weight of certain organse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the full matured length or weight of certain organs varied with nutritional and environmental conditions”
t0“Indica rice plant”
Claim · model-written summary
Indica and Japonica rice had similar elongation and dry-matter patterns
- Taxon
- Indica rice plantOryza sativa Indica Groupt0
- Outcome
- regularity of elongation process and changes in dry mattere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The above mentioned result on the regularity of elongation process and changes in dry matter was similar to that of Japonica rice plant”
t0“Indica rice plant”