@article{oai:kpu.repo.nii.ac.jp:00005145,
 author = {齋藤, 秀樹 and Saito, Hideki and 中口, 努 and Nakaguchi, Tsutomu and 久後, 地平 and Kugo, Chihei and 竹岡, 政治 and Takeoka, Masaji},
 journal = {京都府立大學學術報告. 農學, The scientific reports of Kyoto Prefectural University. Agriculture},
 month = {Nov},
 note = {樹齢100&acd;150年生のコナラ成熟林において1982,83年の繁殖器官各部の生産量を測定し, 考察した。この林分斜面は南向きで急傾斜(平均34度)である。花粉以外の各部生産量はリタートラップ法により, 花粉は開やく前の雄花序につく花粉量調査を併用し, 乾重と個数について推定した。乾物生産量は1982年が300kg/ha・y, 1983年750kg/ha・yで, 雄性も雌性の部分も1983年の方が多く, とくに種子の増加が著しかった。豊作年には乾物生産量全体に占める雌性部分の割合が高く(55%), 凶作年には低かった(20%)。1983年の種子豊作は開花しため花数が増加したこと(2.6倍)と結実率が高かったこと(2倍増加)によりおこった。この結実率の増大は花粉粒の生産個数のそれ(1.2×(10)^<13>&roarr;1.6×(10)^<13>no./ha・y)に対応していた。一方, め花数に対する花粉粒数の比には両年度の違いは小さく, これはスギ, ヒノキ, オニグルミの林分で認められている結果と一致した。, Annual production rates (by dry weight and number) of each component of reproductive organs in a Konara oak (Quercus serrata THUNB.) mature stand, which consisted of trees 100-150 years old, were measured in 1982 and 1983 and analyzed. The slope of the studied stand faced south and was steep (mean inclination : 34°). Production rates per 1-ha stand for each component except pollen were determined using ten litter traps (each measuring 0.5×0.5m), while for pollen, this was done together with measurement of the amount of pollen contained in catkin samples before anther opening. The dry matter production rate of all reproductive parts including pollen in 1982 and 1983 amounted to 300 and 750kg/ha・y, respectively; the increase in 1983 was recognized in both male and female parts, especially acorns. In abundant crops the proportion of female parts to the total production was high (50%), while in poor crops, the proportion was low (20%). The higher production of acorns in 1983 compared with 1982 was caused by an increase in both the potential number of female flowers (2.6 times) and the ratio of fruits which matured (2 times). Changes in the seed-maturing ratio, i.e., the proportion of female flowers developing into mature and sound acorns, was related to the pollen production rate, which varied from 1.2×(10)^<13> to 1.6×(10)^<13> grains/ha・y. Little difference between the two years in the ratio of the number of pollen grains to female flowers was found, which agreed with our previous findings for Sugi (Cryptomeria japonica), Hinoki (Chamaecyparis obtusa) and Siebold walnut (Juglans ailanthifolia) stand.},
 pages = {40--48},
 title = {コナラ成熟林における繁殖器官各部の乾物生産と種子生産における花粉粒及びめ花数の関係(林学部門)},
 volume = {39},
 year = {1987},
 yomi = {サイトウ, ヒデキ and ナカグチ, ツトム and クゴ, チヘイ and タケオカ, マサジ}
}