吉林林业科技
吉林林業科技
길림임업과기
JILIN FORESTRY SCICNCE AND TECHNOLOGY
2014年
3期
1-3
,共3页
樟子松%雄球花%开花%生物学特性
樟子鬆%雄毬花%開花%生物學特性
장자송%웅구화%개화%생물학특성
Pinus sylvestnis var.mongolica Litv.%male cone%flowering%biological characteristics
以城市庭院绿地栽培的樟子松为材料，观察分析球花发育和传粉等开花生物学特性，结果表明：在2013年的气候条件下，群体花期持续10 d，单株传粉变动于5～8 d之间，平均为6．2 d。在不同植株中，雄球花花序大小和着生的小孢子叶球数量有明显的差别，1、2、3号树的雄花序平均长度和平均着生小孢子叶球数量分别为3．2 cm和68枚、2．8 cm和52枚、2．4 cm和44枚。小孢子叶球膨大显露、花粉母细胞减数分裂、群体撒粉初期、群体撒粉结束期4个阶段≥10℃有效积温分别为68℃、141℃、278℃和367℃。
以城市庭院綠地栽培的樟子鬆為材料，觀察分析毬花髮育和傳粉等開花生物學特性，結果錶明：在2013年的氣候條件下，群體花期持續10 d，單株傳粉變動于5～8 d之間，平均為6．2 d。在不同植株中，雄毬花花序大小和著生的小孢子葉毬數量有明顯的差彆，1、2、3號樹的雄花序平均長度和平均著生小孢子葉毬數量分彆為3．2 cm和68枚、2．8 cm和52枚、2．4 cm和44枚。小孢子葉毬膨大顯露、花粉母細胞減數分裂、群體撒粉初期、群體撒粉結束期4箇階段≥10℃有效積溫分彆為68℃、141℃、278℃和367℃。
이성시정원록지재배적장자송위재료，관찰분석구화발육화전분등개화생물학특성，결과표명：재2013년적기후조건하，군체화기지속10 d，단주전분변동우5～8 d지간，평균위6．2 d。재불동식주중，웅구화화서대소화착생적소포자협구수량유명현적차별，1、2、3호수적웅화서평균장도화평균착생소포자협구수량분별위3．2 cm화68매、2．8 cm화52매、2．4 cm화44매。소포자협구팽대현로、화분모세포감수분렬、군체살분초기、군체살분결속기4개계단≥10℃유효적온분별위68℃、141℃、278℃화367℃。
Pinus sylvestnis var.mongolica Litv.cultivated at greenbelt of city courtyard was taken as materials to analyze the biological characteristics of cone development and pollination , the results showed that under the climatic conditions in 2013, the florescence of population flowers were 10 d;individual pollination varied from 5 d to 8 d, and the average day was 6.2 d.There were significant differences between inflorescence forms of male cone and the quantity of inserted mi -crostrobilus in different plants .The average inflorescence length of male cone and quantity of inserted microstrobilus of the first, second and third tree was 3.2 cm and 68, 2.8 cm and 52, 2.4 cm and 44, respectively.During following four sta-ges, emlargement of staminate strobilus , meiosis of pollen mother cells , preliminary stage of population dusting and termi-nal stage of population dusting (≥10℃) , effective accumulative temperature was 68℃,141℃,278℃and 367℃, respec-tively.
