scholarly journals Observations of cross veins of the second foliage leaf blade in the rice plant by use of a revised method for clearing leaves.

1982 ◽  
Vol 51 (4) ◽  
pp. 445-454 ◽  
Author(s):  
Yasuhiro KONO ◽  
Kozo NAKATA ◽  
Jiro TATSUMI
Keyword(s):  
Rice Plant ◽  
Leaf Blade ◽  
Foliage Leaf

Chusquea nedjaquithii (Poaceae: Bambusoideae, Bambuseae, Chusqueinae), a new endemic species from Oaxaca, Mexico

Phytotaxa ◽  
2014 ◽  
Vol 184 (1) ◽  
pp. 23 ◽  
Author(s):  
Eduardo Ruiz-Sanchez ◽  
Teresa Mejía-Saulés ◽  
Lynn G. Clark
Keyword(s):  
Endemic Species ◽  
Leaf Blade ◽  
Herbarium Specimens ◽  
Number Of Species ◽  
Foliage Leaf ◽  
Mexican State ◽  
Sierra Madre ◽  
Sierra Madre Del Sur ◽  
Vegetative Characters

Chusquea is the most diverse among woody bamboo genera, with 174 described species. Not surprisingly, Chusquea is the most diverse bamboo genus in Mexico, and with the description of C. nedjaquithii the number of species will increase to 20, representing almost 45% of the total Mexican woody bamboo diversity. Based on fieldwork in the Mexican state of Oaxaca and revision of herbarium specimens we describe and illustrate C. nedjaquithii, a species endemic to the Sierra Madre del Sur in Oaxaca, Mexico. Chusquea nedjaquithii is similar to C. liebmannii but differs in having culms with deciduous hairs, an oblate central bud and fewer subsidiary buds, strongly geniculate branches in one row forming an incomplete verticil, oblique foliage leaf blade bases, and longer inner ligules in the foliage leaves. A key to the Mexican Chusquea species based on vegetative characters is provided.

The rotated-lamina syndrome. I. Ulmaceae

1993 ◽  
Vol 71 (2) ◽  
pp. 211-221 ◽  
Author(s):  
W. A. Charlton
Keyword(s):  
Leaf Blade ◽  
Early Stage ◽  
Leaf Primordia ◽  
Leaf Primordium ◽  
Foliage Leaf ◽  
Normal Orientation ◽  
Ulmus Glabra ◽  
Young Leaves ◽  
Final Orientation ◽  
Zelkova Serrata

In a number of plants, mostly woody, the components of the buds are arranged so that the laminae of the young leaves all face towards the same (upper) side of the bud, rather than towards the bud apex; in axillary buds they usually face towards the parent axis. This situation has been known for many years. For convenience, the general case is here called the rotated-lamina syndrome. There have been very few developmental investigations of how the laminae attain their unusual orientation, and these have come to different conclusions about cases in the Ulmaceae. This paper reports a detailed investigation of the syndrome in Ulmus glabra and Zelkova serrata, with comparative observations on other Ulmaceae, including cases in Celtis that do not exhibit the syndrome. The syndrome arises by different means in Ulmus and Zelkova. In Ulmus the leaf primordium is asymmetrical from the outset, the leaf blade region is obliquely dorsiventral from an early stage, and further asymmetrical growth of the leaf buttress rotates the whole leaf blade region into its final orientation as it develops. Individual shoots show heteroblastic development in progressing from bud scale to foliage leaf initiation, in increasing accentuation of the rotated-lamina syndrome, and in an increasing degree of dorsiventrality. In Zelkova, as previously described, the leaf blade region appears first as a radially symmetrical upgrowth, and it acquires dorsiventral symmetry directly in the rotated position. In Celtis spp. the lamina arises in a quite normal orientation, but reorients as it emerges from the bud. The leaf primordia of all species studied show asymmetry in other aspects, particularly in respect of stipule development, and these seem to be general features of the organisation of dorsiventral shoots. Key words: Ulmus, Zelkova, Celtis, leaf, development, dorsiventrality, lamina rotation.

Studies on Growth of Leaves of Paddy Rice Plant. : I. The Growth of the Leaf-blade and Leaf-Sheath.

1954 ◽  
Vol 23 (1) ◽  
pp. 21-25 ◽  
Author(s):  
Kaichi ARASHII ◽  
Hiroshi EGUCHI
Keyword(s):  
Rice Plant ◽  
Leaf Blade ◽  
Leaf Sheath ◽  
Paddy Rice

scholarly journals Rice grown in nutrient solution with doses of manganese and silicon

2010 ◽  
Vol 34 (5) ◽  
pp. 1629-1639 ◽  
Author(s):  
Luiz Antônio Zanão Júnior ◽  
Renildes Lúcio Ferreira Fontes ◽  
Júlio César Lima Neves ◽  
Gaspar Henrique Korndörfer ◽  
Vinícius Tavares de Ávila
Keyword(s):  
Nutrient Solution ◽  
Rice Plant ◽  
Leaf Blade ◽  
Dry Matter ◽  
Plant Architecture ◽  
Block Design ◽  
Dry Matter Yield ◽  
Mn Toxicity ◽  
Rice Plants ◽  
Leaf Insertion

Although silicon is not recognized as a nutrient, it may benefit rice plants and may alleviate the Mn toxicity in some plant species. The dry matter yield (root, leaf, sheaths and leaf blade) and plant architecture (angle of leaf insertion and leaf arc) were evaluated in rice plants grown in nutrient solutions with three Mn doses, with and without Si addition. The treatments were arranged in a 2 x 3 factorial [with and without (2 mmol L-1) Si; three Mn doses (0.5; 2.5 and 10 µmol L-1)], in a randomized block design with 4 replications. The experimental unit was a 4 L plastic vase with 4 rice (Metica-1 cultivar) plants. Thirty nine days after keeping the seedlings in the nutrient solution the plant dry matter yield was determined; the angle of leaf insertion in the sheath and the leaf arc were measured; and the Si and Mn concentrations in roots, sheaths and leaves were determined. The analysis of variance (F test at 5 and 1 % levels) and the regression analysis (for testing plant response to Mn with the Si treatments) were performed. The Si added to the nutrient solution increased the dry matter yield of roots, sheaths and leaf blades and also decreased the angle of leaf blade insertion into the sheath and the foliar arc in the rice plant. Additionally, it ameliorated the rice plant architecture which allowed an increase in the dry matter yield. Similarly, the addition of Mn to the solution improved the architecture of the rice plants with gain in dry matter yield. As Si was added to the nutrient solution, the concentration of Mn in leaves decreased and in roots increased thus alleviating the toxic effects of Mn on the plants.

Chusquea parviligulata (Poaceae: Bambusoideae: Bambuseae): a new species of C. subg. Chusquea endemic to the Atlantic rainforest of Bahia, Brazil

Phytotaxa ◽  
2019 ◽  
Vol 405 (1) ◽  
pp. 27
Author(s):  
RAY S. ANDRADE ◽  
EVANDRO M. PIANISSOLA ◽  
KAIO VINICIUS DE A. VIDAL ◽  
ALINE COSTA DA MOTA ◽  
LYNN G. CLARK ◽  
...  
Keyword(s):  
New Species ◽  
Leaf Blade ◽  
Conservation Status ◽  
Atlantic Rainforest ◽  
Informal Group ◽  
Foliage Leaf ◽  
Southern Bahia ◽  
A New Species

Chusquea parviligulata, a new species of Neotropical woody bamboo (Bambuseae: Chusqueinae), is herein described and illustrated, and information on its morphology, conservation status and distribution are provided. It is classified within C. subg. Chusquea based on its relatively elongated internodes, differentiated culm leaves, a triangular and vertically oriented central bud, and infravaginal branching. Based on its occurrence in Brazil and the presence of a white waxy band below the nodes and infravaginal branching, C. parviligulata is further assigned to the C. meyeriana informal group. Within this group, C. parviligulata is most similar to C. clemirae and C. longispiculata, sharing the usually evident division of the subsidiary buds/branches into two groups as well as a triangular central bud and little to no fusion of the overlapping margin of the culm leaf sheaths. Chusquea parviligulata is characterized by having 20–42 subsidiary buds per node; foliage leaf blades adaxially scabrous near the margins and otherwise glabrous or sparsely setose and abaxially mostly glabrous, with a tuft of trichomes at the base; foliage leaf blade base attenuate and slightly asymmetric; and an inner ligule 0.05–0.2 mm long, among the shortest recorded for the genus. Chusquea parviligulata is found exclusively in the Serra da Pedra Lascada, a montane Atlantic Rainforest area in southern Bahia, and it has a restricted occurrence within the Serra. We also report a new locality for C. clemirae and confirm that is has infravaginal branching, not extravaginal branching as originally reported.

Revalidation of Chusquea argentina (Poaceae, Bambusoideae, Bambuseae) on the basis of morphological, anatomical and phenological characters

Phytotaxa ◽  
2014 ◽  
Vol 158 (3) ◽  
pp. 265 ◽  
Author(s):  
Carolina Guerreiro ◽  
Zulma Rúgolo de Agrasar
Keyword(s):  
Cross Sections ◽  
Leaf Blade ◽  
Morphological Characters ◽  
Valid Species ◽  
Mass Flowering ◽  
Diagnostic Characters ◽  
Foliage Leaf ◽  
The World ◽  
Differential Characters ◽  
Woody Bamboos

Chusquea (Poaceae, Bambusoideae, Bambuseae) is the most diverse genus of woody bamboos in the world. In Andean Patagonian forests of southern Argentina and Chile, several species of Chusquea are the dominant components of the understory. Chusquea argentina and C. culeou fo. longiramea were described from that area on the basis of morphological characters. Some authors have considered C. argentina to be a valid species and others have treated this and C. culeou fo. longiramea as synonyms of C. culeou. This study contributes to the delimitation of these taxa. Based on morphology and anatomy, we clarify differential characters between C. culeou and C. argentina and restore the latter as a valid species. Chusquea culeou fo. longiramea is synonymized under C. argentina. According to data of mass flowering events recorded in southern Argentina and Chile, C. culeou and C. argentina become reproductive at different times. Anatomical descriptions of culm and foliage leaf blade epidermis and cross sections are provided for each species. Comparative tables based on diagnostic characters are also included.

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