蘆筍選種（一）蘆筍遺傳性狀變異及相關之研究

Improvement of Asparagus (Ⅰ.) Variation and Correlation of Economic Characters in Asparagus

本試驗結果分為性狀相關關係，變方分析及優良植株選拔三部份： 1.在性狀相關關係所得的結果為：（1）.單株總產量與先前冬季休閒期母莖枝數，根盤大小等成相關且極顯著；而母莖平均直徑則以中等大小最好。（2）.冬季休閒期間母莖枝數與嫩莖支數成正相關，極顯著。（3）.嫩莖蘆筍緊密度與母莖第一分枝高度成正相關，極顯著。（4）.冬季休閒期母莖枝數與母莖根盤大小成正相關，極顯著。（5）.冬季母莖平均高度與單株總產量在加州711品種成正相關，極顯著，在加州309品種則呈顯著。（6）.在夏季（7, 8月）高溫多雨季節經調查結果顯示母莖較高者則表現抗病性較強。本研究結果可供今後臺灣地區蘆筍選種工作之應用與參考：（a）.供應用選種；（2）供應用選拔優良單株供採種之用。2.品種變方成份經分析結果：在總產量中佔8.0%，在一級品產量中佔7.4%。3.優良植株選拔後加州309品種得到102株，加州711品種得到106株，每單株分割成5-10分株於民國六十五年二月栽植供繼續進行試驗之用。

Results of this study were divided into three parts: correlation of characters, analysis variance of variety components and superior plants selection. 1. Correlation of characters: (1). Yield of individual asparagus plant is very significantly correlated positively with number of stalks and crown size. Medium stalks were found good for yield. (2). Number of spears is very significantly correlated positively with number of stalks. (8). The height of first branch of stalks is very sigificantly Correlated positively with tightness of spear tip. (4). Mean stalks number is very significantly correlated positively with crown size. (5). Yield of individual asparagus plant is very significantly correlated positively with the height of stalks on U. C 711 variety, and is significantly on U.C309 variety. Above these conclusions were based on investigating the plant characters at winter season. (6). Plants with more taller stalks were resistant to disease during the summer season. Results of this study would be used for reference and performance on selective breeding in Taiwan. 2. Analysis variance of variety components showed 8 % for total yield and TA 96 for first grade yield. 3. After twice selection for superior plants 102 and 106 plants were selected for U. C 309 and U. C 711, respectively. Each of the superior plants was cut into 5 to 10 divisions which were planted on February, 1976 for the continuation of this study.