The Major Types of Caryopses of the Chinese Gramineae in Relation to Systematics

The Major Types of Caryopses of the Chinese Gramineae in Relation to Systematics

Wang Shi-Jin, Kuo Pen-Chao, Li Jian-Hua

(Northwest Plateau Institute of Biology. Academia Sinica, Xining)

Received:1900-01-01 Revised:1900-01-01 Online:1986-10-18 Published:1986-10-18
Contact: Wang Shi-Jin

Abstract

Abstract:

Examinations were made on the morphology of caryopses of 324 grass species re-

presenting over 109 genera and 31 tribes. The evolutionary tendency of the important characte-

ristics and the relation with distribution areas and habitats are discussed. According to the

shape of caryopses, the morphology of ventral faces and hilum, the proportion of embryos to

caryopses in size, the existence or absence of the top fine hairs, the persistence or shedding of

styles, the size of fruits and especially the outline of the middle cross section, etc., the caryopses

may be divided into three major types and seven subtypes: Bambusoid (including True Bambusoid,

Arundinoid, Oryzoid, Stipoid), Panicoid (including True Panicoid, Eragrostoid) and Pooid

(including the Subtype Pooid only). In this study, the different types of caryopses are found to

be correlated with the characteristics of embryos, seedlings, habits and chromosomes, and on

these grounds, the genera of the Gramineae are grouped into seven corresponding subfamilies:

Bambusoideae, Oryzoideae, Arundinoideae, Stipoideae, Eragrostoideae, Panicoideae and Pooideae.

Key words: Gramineae, caryopses, systematics

Wang Shi-Jin, Kuo Pen-Chao, Li Jian-Hua. The Major Types of Caryopses of the Chinese Gramineae in Relation to Systematics[J]. .

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The Major Types of Caryopses of the Chinese Gramineae in Relation to Systematics

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