Flowering and fruiting periodicity of some tree species in South-Eastern Nigerian moist

Dike, M. C.

doi:10.4314/gjpas.v7i4.16303

Cited by 3 publications

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“…The few number of tree species at the plantation and abandoned farmland was attributed to the inadequate dispersal appendages of most fruit and seeds of the rainforest. The observation agreed with the record of Dike (2001) that it is difficult for fruits and seeds of Nigerian rainforest tree species to fly up to 200 m. It was observed that most community owned abandoned farmland were over 500 m wide and 10, 000 m in length. Moreover, presently most trees species listed as 'economic' (Lancaster 1961) are mainly restricted to forest reserved areas.…”

Section: Resultssupporting

confidence: 88%

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Red, far red wavelength, the ratio red to far red, temperature and vegetation at a secondary forest regrowth and under the crowns of three plantation tree species at Umudike, Nigeria.

Dike¹

2009

Global Journal of Agricultural Sciences

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Measurements of temperature, red, far red wavelength of light and the ratio red to far red were made at every 10 minutes interval at marked points along a 15 m transect using thermometers and a Skye 660/730 Radiation Detector and Measuring unit (SKR100: SKR110) at Umudike, Nigeria. Readings were made during the dry and wet seasons under the forest floor of a secondary forest regrowth, under the crowns of Treculia africana, Dacryodes edulis, Irvingia gabonensis and in a 1-year old abandonded farmland. Readings were taken at a height of 50cm above the ground. Plant species within 2.5 X 2.5m 2 quadrats were enumerated every two months. Data revealed that there were variations within and between the red and far red wavelength at the studied sites. The ranges of the far red during the dry season were from-0.30 to 18.77;-0.42 to 10.18;-0.40 to 7.70;-0.60 to 1.36 and-0.39 to 0.31 in abandoned farmland, under the crowns of Treculia africana, Dacryodes edulis, Irvingia gabonensis and a secondary forest regrowth, respectively. The ranges during the wet season were

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Section: Resultssupporting

confidence: 88%

“…There is paucity of literature on the quality of light at the forest floor. Adequate knowledge of the light quality at the forest floor is important because numerous seeds produced by various plants species fall vertically down on the forest floor annually (Appanah, 1985;Dike 2001).…”

Section: Introductionmentioning

confidence: 99%

Red, far red wavelength, the ratio red to far red, temperature and vegetation at a secondary forest regrowth and under the crowns of three plantation tree species at Umudike, Nigeria.

Dike¹

2009

Global Journal of Agricultural Sciences

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“…The dry season continues till the mid-March of the following year. During the peak of the dry season, many trees such as Ceiba pentandra shade most of their leaves (Dike, 2001). The dusty harmattan wind blows intermittently during the months of December and January.…”

Section: Study Areamentioning

confidence: 99%

Proximate and phytochemical compositions of some browse plant species of southeastern Nigeria

Dike¹

2009

Global Journal of Agricultural Sciences

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The proximate and phytochemical composition of some browse plant species were studied at the rainforests at Oban National Park and Umudike, Nigeria to determine their suitability as feeding material for wild and domestic animals. Questionnaire was served to 50 individuals who are either hunters or rear upto six goats or sheep within Umudike and Oban National Park enclave to know the plant species fed upon by wild animals and domestic animals. Two 10-hectare blocks were laid at Oban National Park and the rain forest at Umudike. Leaves of all the plant species eaten by vertebrate animals within the 10 hectare blocks were collected and identified to species level at the Forest Herbarium, Forestry Research Institute at Jericho, Ibadan, Nigeria. Out of 27 plant species eaten by animals, 17 plant species were selected at random for study of their leaves proximate, phytochemical and mineral composition. It was observed that moisture content ranged between 8.08 and 11.10 per cent. The dry matter ranged between 88.90 and 91.92 per cent. The percent crude protein was highest in Uvaria chamae (21.88%) and least in Andropogeon tectorum (10.50%). The crude fat ranged from 1.38 percent in Gmelina arborea to 10.26 in U. chamae. The crude fibre was highest in Ficus exasperata (38.04%) and least in U.chamae with 8.96 per cent. The percent ash ranged from 5.98 to 9.44. The carbohydrates ranged from 37.76 to 54.56 per cent while the energy ranged from 226.08 to 387.30. In all of the studied plant species, the percent alkaloid, saponine, flavanoid, tannin and steroid were often less than 10 per cent. However, the Hydrogen cynide ranged from 0.05 in Uvaria chamae to 0.93 in Aspilia africana. The percent Sodium, Potassium, Calcium, Magnesium, Phosphorus, Iron, Zinc, Copper, Lead, Cadmium and Manganese were often less than 5.0 percent. Mercury was in trace amount. Based on the contents of the leaves, these plants: Allophylus africanus, Costus afer, Uvaria chamae, Myrianthus arboreus, Carpolobia lutea, Ficus exasperata and Hannoa klaineana having upto 10% per cent crude protein, 5.00 percent crude fat and high palatability should be used in the establishment of fodder bank. The use of leaves of Treculia africana as fodder should be discouraged as it contains little quantity of Cadmium and Chromium which could have cumulative adverse effects.

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“…It is, therefore, difficult and costly to germinate seeds within three weeks, without adequate seed treatment. Moreover, fruits of some edible plant species such as Gambeya albida and Dialium guineense are produced periodically and their seeds remained viable for only few months (Ng, 1980;Dike, 2001). Furthermore, seedlings of plant species having resinous bark such as Dacryodes edulis are difficult to bud (Okafor, 1977).…”

Section: Introductionmentioning

confidence: 99%

Relationships Between Fruits And Seed Sizes, Germination And Early Seedling Growth Of Some Edible Plant Species In Southeastern Nigerian Rainforest

Dike¹

2009

Glo Jnl Pure Appl Sci

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Relationships between fruits and seeds sizes; seed germination and early seedling growth of seedlings of 25 plant species were studied at the University of Agriculture, Umudike, Nigeria. The destruction of Nigeria rainforest without an assured method of naturally regenerating it, has contributed to some edible plant species being either fewer per hectare or endangered in abandoned farmlands. Fruits of 25 plant species were collected from the rainforest at Umudike, Nigeria. For each plant species 100 fruits and seeds were selected for the study. All the fruits contained between 1 and 30 seeds. The length, width and weight of fruits and seeds of the plant species varied within and between plant species. The biggest fruits were those of Pentaclethra macrophylla with length ranging of between 435.22 and 508.52 mm while the biggest seeds were those of Plukernetia conophora each had length range of between 60.39 and 98.14 mm.. The length and width of each fruit and seed were measured using Digimatic Mitutoyo caliper. For each fruit and seeds, the weight was measured using electric weighing balance, Ohaus Corporation, Model Scout Prospu 402. Broadcast of 100 seeds of each plant species was done on germination boxes of size 30 x 60 cm, and watered twice daily. All the viable seeds germinated, however, mechanical dormancy was observed in the fruits of Spondias mombin, Tetrapleura tetraptera and Canarium schweinfurthii, whose seeds were covered by fibrous material. There was no co-relationship between seed size and germination rate because both small and big seeds started germination within the same week. The observed seedling types were Phanerocotylar -epigeal -reserve, (52.9%), Phanerocotylar -epigeal -foliaceous (20%) and Cryptocotylar -hypogeal -reserve (12.0 %), Phenerocotylar -hypogeal -reserve (8) and Cryptocotylar-epigeal-reserve (8%). There was a significant different in the growth rate of seedlings of the plant species. The rate of growth of 0.05 m per month of seedlings of Persea americana and Dacryodes edulis was comparatively high presumably because of the food stored in the seed. The rate of growth of 0.001 m per month of Dialium guineense seedlings was very poor presumably because of the relatively small quantity of food stored in the seed. Carpolobia lutea produced numerous branches exhibiting shrubby characteristics. It is recommended that fruits should be collected from different provenances and their proximate composition analysed. Fruits having desirable qualities should be genetically improved.

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Flowering and fruiting periodicity of some tree species in South-Eastern Nigerian moist

Cited by 3 publications

References 0 publications

Red, far red wavelength, the ratio red to far red, temperature and vegetation at a secondary forest regrowth and under the crowns of three plantation tree species at Umudike, Nigeria.

Red, far red wavelength, the ratio red to far red, temperature and vegetation at a secondary forest regrowth and under the crowns of three plantation tree species at Umudike, Nigeria.

Proximate and phytochemical compositions of some browse plant species of southeastern Nigeria

Relationships Between Fruits And Seed Sizes, Germination And Early Seedling Growth Of Some Edible Plant Species In Southeastern Nigerian Rainforest

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