EFFECT OF GROWING TEMPERATURES ON SCALY RHIZOME FORMATION OF ACHIMENES
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Scaly rhizome formation in Achimenes cv. Primadonna was investigated under controlled conditions in growth chambers. When plants from seeds were grown at 30-25°C (day/night), scaly rhizome formation was delayed. Plants from cuttings grown at 30-25°C showed a delay in scaly rhizome formation. Also, in plants grown from rhizomes, the number of scaly rhizomes and fresh weight of scaly rhizome were lowest at 30-25°C. These results indicate that high temperature at 30-25°C retards the scaly rhizome formation in Achimenes.Zingiber officinale
Zingiberaceae
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Rhizome growth characteristics of Chimonbambusa hejiangensis affected the quality of shoots instantly.The rhizome growth rules were studied in this paper.The results showed that the rhizome of chimonbambusa hejiangensis was mainly distributed in the depth of 0～25cm in soil,especially in 5~10cm.The rhizome angle,diameter at half of one rhizome and the rhizome length were significantly different between the clones.The more rhizomes grew in a short-term when the underground stems grew to a certain length.Meanwhile it was also found that the temperature and rainfall in June to September were the limiting factors of rhizome growth.
Limiting
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Rhizome diameter,internode length,and the number of cross rhizomes and jumping rhizomes of a Phyllostachys pubescens forest which was used for both bamboo shoots and bamboo poles and whose rhizome shoots were dug out and removed for 8 years were studied.Results showed that compared with the rhizome shoot forests that were not removed:(1) cross rhizome diameters decreased 0.1 cm than main rhizome diameters;(2) the average diameter of the all rhizomes increased 0.30 cm;(3) the average diameter of the main rhizomes increased 0.30-0.70 cm;(4) the average internode length of the all rhizomes increased 0.31 cm;(5) the cross rhizome number significantly increased two(t = 6.006t0.01 = 3.355);and(6) in rhizome shoot forests that were removed,there were no jumping rhizomes.
Digging
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Scaly rhizome formation in Achimenes cv. Primadonna was investigated under controlled conditions in growth chambers. When plants from seeds were grown at 30-25°C (day/night), scaly rhizome formation was delayed. Plants from cuttings grown at 30-25°C showed a delay in scaly rhizome formation. Also, in plants grown from rhizomes, the number of scaly rhizomes and fresh weight of scaly rhizome were lowest at 30-25°C. These results indicate that high temperature at 30-25°C retards the scaly rhizome formation in Achimenes.
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1 Solidago altissima forms large compact below‐ground rhizome systems. The rhizome systems of 30 genets in a population that had colonized an old‐field in 1984 were mapped yearly in situ from 1988 to 1992. Branching angles, lengths and survival of rhizomes, and production of daughter rhizomes, were calculated from digitized maps. 2 We hypothesized that genets of S. altissima would prevent intraclonal crowding by producing longer but fewer rhizomes as they increased in size. In addition, we tested the effects of environmental factors on rhizome dynamics by (i) mowing in late summer, (ii) cutting of rhizome connections, and (iii) removal of close neighbour plants. 3 Most rhizomes were initiated at an angle of 60°−65° relative to the parent rhizome. Subsequent growth tended towards the parent axis and towards more centrifugal growth. Rhizome angles were not influenced by any treatment. 4 In control genets, rhizome density increased 1.3‐fold from March 1988 to March 1992. The number of newly produced rhizomes per genet decreased and their length increased from 1988 to 1992. Longer rhizomes had a higher survival probability than shorter rhizomes did. The number of newly produced rhizomes per parent rhizome was positively correlated with mean rhizome length per genet. 5 Mowing strongly decreased rhizome density from 1988 to 1992, mainly due to reduced production of new rhizomes. 6 Rhizome cutting led to a slight decline in the rhizome population and to shorter lengths of rhizomes in their second year compared with controls. 7 The removal of close neighbour plants led to increased rhizome densities. These rhizomes grew longer than controls in unmown plots and shorter in mown plots and had higher probabilities of surviving into their second year. 8 Yearly mowing could successfully prevent the further spread of S. altissima because it acts on rhizome and shoot dynamics as well as on seed output.
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The biological characteristics and laws of growth of Asiatic moonseed (Menispermum dauricum DC.) were known well through the research.The results showed that there were no necessary to acclimatized Asiatic moonseed because there were no difference between the cultivated ones and the wild ones in biological characteristics.The number and the length of first and second grade rhizomes increased in duplication as the plant grows in ages, and no third grade rhizomes was observed in first year growing.Rhizomes in plants of three years of age were twice in number and much longer than that in two years.The distribution depth of the rhizomes was 13 cm in average.The rate of root to cap was 9.1∶1 in weight.There were two growing peaks of the main rhizomes above ground.The height growth of the main rhizomes above ground in plants one year,two years and three years of age were 35.6,69.4 and 90.19cm respectively.
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Objective:To study the effect of different rhizome grades on the yield of Paris polyphylla var.yunnanensis.Methods:To compare survival percentage,increased times of rhizomes size,weigh and yield of different rhizome grades of Paris polyphylla var.yunnanensis cultivated for 3 years.Results: the most suitable rhizome grade was selected out.Conclusion:the most suitable rhizome grade is 10g and increased times of rhizomes weigh can reach 3 times.
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Rhizome of bamboo has a complex structure.A survey is carried out on rhizome of Phyllostachys bambusoides f.lacrima-deae Keng in Bo'ai.The result shows that rhizome growth and their distribution in soil are reasonable.The effect of depth of soil on the rhizome length is obvious,whereas the effect of the rhizome age on the rhizome diameter is not obvious,it has a significant effect on the numbers of buds.The bamboo has the typical shallow roots,about 85.7% rhizomes are mainly distributed in 0-20 cm deep soil layer.As for the above rhizome,its diameter is small,length between notes is short,and no shoots grow on it.In order to increase the numbers of rhizome,we should loose the soil,kill the grass,fertilize and cover reasonably.
Phyllostachys
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HLA-B-associated transcript 3 (BAT3) was originally identified as one of the genes located within human major histocompatibility complex. It encodes a large proline-rich protein with unknown function. In this study, we found that a fragment of the BAT3 gene product interacts with a candidate tumor suppressor, DAN, in the yeast-based two-hybrid system. We cloned the full-length rat BAT3 cDNA from a fibroblast 3Y1 cDNA library. Our sequence analysis has demonstrated that rat BAT3 cDNA is 3617 nucleotides in length and encodes a full-length BAT3 (1098 amino acids) with an estimated molecular mass of 114,801 daltons, which displays an 87.4% identity with human BAT3. The deletion experiment revealed that the N-terminal region (amino acid residues 1-80) of DAN was required for the interaction with BAT3. Green fluorescent protein-tagged BAT3 was largely localized in the cytoplasm of COS cells. Northern hybridization showed that BAT3 mRNA was expressed in all the adult rat tissues examined but predominantly in testis. In addition, the level of BAT3 mRNA expression was more downregulated in some of the transformed cells, including v-mos- and v-Ha-ras-transformed 3Y1 cells, than in the parental cells.
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Curcuma longa L. is known as spice crop and have important medicinal properties due to presence of bioactive compounds. This study was carried out to determine the effect of mother and finger rhizomes size on growth and yield of turmeric. Rhizomes with three different sizes were used viz., T1: mother rhizome 15-25 g, T2: mother rhizome 25-35 g, T3: mother rhizome 35-45 g, T4: finger rhizome <10 g, T5: finger rhizome 15-25 g and T6: finger rhizome 25-35 g. This experiment was arranged according to randomized complete block design with three replications. Results showed that treatment T3 (mother rhizome 34-45 g) produced maximum plant height (82.57 cm), stem diameter (17.39 mm), number of tillers (10.31), number of leaves (16.04), leaf area (73.21 cm²), total number of rhizomes (28.01), number of primary rhizome (11.70), number of secondary rhizome (21.45), yield per plant (345.06 g/plant), rhizome length (25.93 mm), rhizome diameter (22.53 mm), and 8.11% curcumin content while the seedling emergence percentage was non-significant for all the treatments.
Zingiber officinale
Zingiberaceae
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