摘要
籼粳稻杂交 F_1代主要性状优势表现突出,单株干物重和单株颖花数的高优势说明籼粳交具有明显的增产潜力。齐穗期净同化率、叶绿素含量和比叶重与单株干物重呈显著的正相关。籼粳交的抗倒性强于粳粳交和籼籼交。用科情3号与籼稻组配的 F_1结实率较高,这可能与其含有籼稻血缘有关。利用籼粳交优势应选用通过籼粳稻杂交育成的中间型品种。此外,还应注意对亲本抗性和品质等方面的选择。
The high heteroses of dry matter per plant and spikelet number
per plant showed that F1 hybrids of Japonica(J)×Indica(Ⅰ)were
of obvious high-yield potential.The assimilation rate,chlorophyl
Content and specific leaf weight of F1 hybrids were positively corre-
lated to dry matter per plant at significant levels(p<0.05 or p<0.01)
at the heading stage.High-yield potential were related to the heteroses
of morphologic traits.F1 hybrids of J×I were shown to be more
resistant to lodging than that of J×J and I×I.Seed-setting rate of
F1 hybrids of ″Ke QingU″×Indica was high,probably because they
contain the consanguinity of Indica.In utilization of the heterosis of
J×I,the intermediate varities crossing through J×I should be
used.In addition,the cold resistance and amylose content of F1 hybrids
of J×I were also discussed.
出处
《沈阳农业大学学报》
CAS
CSCD
1991年第0期92-98,共7页
Journal of Shenyang Agricultural University
关键词
灿稻
粳稻
杂交优势
Japonica
Indica
hybrid between Japonica and Indica
Heterosis
