灌漑程度を異にしたグレインソルガムの生育について

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To investigate the effects of different water irrigation on the growth of various parts of grain sorghum (Sorghum bicolor Maench), Hybrid H-726. A pot trial was conducted in the Nagoya University, Experimental Farm, with four different water contents, pF (0 to 1.5, 2.0, 2.5, 2.8) respectively. The sorghum seeds were planted on June 15, 1977 (irrigation treatment started on June 28, when the seedlings got four leaves age), heading at same time on August 8, and harvested on October 4 and 5. The results show that : 1) The higher water content (pF 0 to 1.5) has produced the plants with higher leaf number, and the leaves have come out faster. 2) Differences in plant leaf number (17, 16, 15) makes difficulties on getting results and judgment. The data combined on the node 12 and adjusted on the node 16. By this arrangement method all plants recognized 16 leaves. 3) Treatment pF 0 to 1.5 has produced plants with larger leaf blade area and internode diameter, specially from internode 7, longer sheath and internode. 4) Total roots number (primordium and elongated) are greater in treatment pF 0 to 1.5 than other treatment, but definite differences start from node 8. Also the roots have come out from upper nodes and elongated earlier than others. 5) The plants which grown under higher water content, comparatively, have had more roots and leaf number. Because of that, better photosynthesis produced heavier whole plant and head fresh weight, longer peduncle, head and consequently higher plants.
日本作物学会の論文
1978-03-31

灌漑程度を異にしたグレインソルガムの生育について

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