摘要
通过对单优群落随机取样的调查与测定,分析了松嫩平原碱化草甸漳毛种群有性生殖的数量特征及营养繁殖特性。樟毛种群以营养生长和营养繁殖为主,成穗率仅为15.7%,结实率为41.6%。獐毛的匍匐茎在整个生长季均不断地增节伸长。至生长季末期,大多数匍匐茎可产生20~22个节,总长度可达269.5~304.5cm,节上可共产生85.5~l11.4个营养繁殖株。不同月份的匍匐茎,其营养繁殖具有相同的规律性。匍匐茎的营养繁殖株在翌春存活与繁殖的数量最少者为10株,多者达131株,基部1~2节无存活,3~19节可形成1~23株的营养繁殖株丛,最远存活的节营养繁殖株距母株294m。
Through investigation and calculation by random
samplmg in the singsle dominant Community, quantita-tive characters of sexual reproduction
and specifity of vegetative propagation,the Aeluropus littoralis var sinen-sis population in the
alkalized meadow of the Songnen Plain Area,Nor theast China was analyzed in the pa-per,In
the said population both the vegetative growth and propagation conditions in detail have been
studi-ed in the main,but the rate of earing was only l5.7%,and that of seed-setting percentage
was 41.6%。The nOdes were continuously developing throughout from the end of the creeping
stem to stretch in lengthand grow more in number.The great majority of creeping stems could
produce 20 to 22 nodes,of which thetotal length would reach as much as 269.5 to 3 04.5 cm,and
in every node,there were a total number of85.5 to 111.4 vegetative propagating plants be
produced till the end of growth season.The creeping stems,though stretching out in different
months, however,their specifity of vegetative propagation would possessmuch the same
pattern of regularity. In the spring of the next year after seeding,the vegetative propagatin
gplants along with those of survivals,in which the numbers were very great in disparity,varying
from 40,theleast,to l31,the greatest;but in the basal part of stem,from the first to the second
nodes,not any one wasin survival,and then all the other nodes,from the third enumerated till
the l9th,there were 1 to 23 plants ofvegetatively propagated be formed from the basal
tufts,among them,the farthest survived nodes also thosestretching out from the stems,were
294cm away from the maternal plant in our trial.
出处
《草业学报》
CSCD
1994年第4期12-19,共8页
Acta Prataculturae Sinica
基金
国家自然科学基金
关键词
獐毛
有性生殖
繁殖
种群
碱化草甸
松嫩平原
Aeluropus littoralis var, sinensis,
sexual reproduction, vegetative propagation, population haracter,alkalized meadow,the
Songnen Plain