黑杨派和青杨派叶片的比较解剖

<正>本文描述了黑杨派和青杨派的17种杨树叶片的解剖构造,它们分属两种类型:等面叶和异面叶。属等面叶的是黑杨派的5个无性系:Ⅰ-69、Ⅰ-63、872、888、890;属异面叶的是青杨派的二个种:小叶杨和辽杨以及黑杨派的加农杨。杂交子代Ⅰ-69×加农杨、山海关杨×Ⅰ-63、Ⅰ-214×Ⅰ-63、Ⅰ-72×Ⅰ-63和Ⅰ-72趋向于等面叶型;杂交子代Ⅰ-69×小叶杨、Ⅰ69×辽杨、Ⅰ-214和山海关杨趋向于异面叶型。文中分析了杂交子代的遗传性状,讨论了叶片结构和环境因子及遗传因子的关系,试图为选育优良无性系提供解剖学的理论依据。

ANATOMICAL OBSERVATIONS ON LEAVES OF AIGEIROS AND CATHAY POPLARS

This article describes the anatomical features of leaves of seventeen species of Aigeiros and Cathay Poplars. Of the 17 species examined here, 5 (Populus dtltoides Bartr. cv. ’Lux’ (ex. I-69/55); P.deltoides Bartr. var. deltoides cv. ’Harvard’ ( I-63/51); 872; 8885 and 890) have distinctly isolateral leaves, 5 (I-69 × Populus nigra cv. Blane de garonne; Shan Hai Guan Poplar x I-63 ;P. × eurameri-cana (Dode) Guinier (ex. I-214) × I-63; P- × euramericana (Dode) Guinier cv. ’san Martion’ (ex. I-72/58) × I-63; and I-72 show a tendency to be isolateral. 3 (P. simonii Carr; P. maximowiczii Henry.; Populus nigra cv Blanc de garonne.) have dorsi-vcntral leaves, and 4 (I-69 × P. simonii Carr., I-69 × P. maximowiczii Henry.; Shan Hai Guan Poplar and I-214) show a tendency to be dorsi-ventral. This article also analyzes the hereditary properties of, the hybrid filial generation and discusses the relationship between the features of leaves and the genetic factors, attempting to provide on anatomic theoretical basis for the selection and breading of superior clones.