±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 222  |  »Ø¸´: 1
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£
¡¾ÐüÉͽð±Ò¡¿»Ø´ð±¾ÌûÎÊÌ⣬×÷Õßgcr½«ÔùËÍÄú 5 ¸ö½ð±Ò

gcr

[ÇóÖú] ÇóÖú·­Ò룡лл

3. Give three reasons why micropropagation is a good system for mass propagation.
answer = used for propagating species which are slow to multiply; used for new cultivars
with high demand for high value crops; used for difficult-to-root plants (Also - used to conserve germplasm)

4. What are three disadvantages of propagating plants by micropropagation?
answer = expensive facilities; need fortrained personnel; high labor requiring
(Also - contamination can cause large losses; off-type plants; marketing - over
production of easy-to-propagate species)

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

snipher950

ľ³æ (ÕýʽдÊÖ)

3. ¸ø³öÈý¸öÔ­Òò˵Ã÷Ϊʲô΢Ìå·±Ö³¶ÔÓÚ¿ìËÙ·±Ö³ÊÇÒ»¸öºÃµÄϵͳ
´ð£º¿ÉÓÃÓÚ·±Ö³»ºÂýµÄÖÖȺ£»ÓÃÓÚ¸ßÆ·ÖʸßÒªÇóµÄÐÂ×÷ÎÓÃÓÚÄÑÉú¸ùÖ²Îï
£¨ÁíÍ⣬¿ÉÓÃÓÚÖü²ØÅßÖÊ£©

4£®Ö²Îï·±Ö³ÖеÄ΢Ìå·±Ö³µÄÈý¸öȱµãÊÇʲô£¿
´ð£º°º¹óµÄÉèÊ©£»ÐèÒªÊܹýÅàѵµÄÈËÔ±£»ÐèÒª¸ßËØÖÊÀ͹¤
£¨ÁíÍ⣬ÎÛȾ»áÔì³É´óµÄËðʧ£»ÒìÐÍÖ²Î¶ÔÓÚÈÝÒ×·±Ö³µÄÖÖȺ³öÏÖÊг¡¹ýÊ££©
2Â¥2008-06-17 17:06:51
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ gcr µÄÖ÷Ìâ¸üÐÂ
²»Ó¦Öú È·¶¨»ØÌûÓ¦Öú (×¢Ò⣺ӦÖú²Å¿ÉÄܱ»½±Àø£¬µ«²»ÔÊÐí¹àË®£¬±ØÐëÌîд15¸ö×Ö·ûÒÔÉÏ)
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Ò»Ö¾Ô¸¹þ¹¤´ó£¬³õÊÔ329£¬Çó»·¾³¿ÆÑ§Ó빤³Ìµ÷¼Á£¡ +3 ÓàδÐÁ 2026-04-06 3/150 2026-04-06 17:51 by Ecowxq666£¡
[¿¼ÑÐ] 081700£¬311£¬Çóµ÷¼Á +16 ¶¬Ê®Èý 2026-04-04 17/850 2026-04-06 14:56 by ÉÐË®¸óÖ÷
[¿¼ÑÐ] 290Çóµ÷¼Á085701 +11 1314Åõ»¨ 2026-04-02 11/550 2026-04-06 13:31 by zllcz
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á325·Ö +12 15771691647 2026-04-04 13/650 2026-04-06 12:00 by lijunpoly
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷°²½»´ó²ÄÁÏѧ˶£¨Ó¢Ò»Êý¶þ£©347£¬Çóµ÷¼Áµ½¸ß·Ö×Ó/²ÄÁÏÏà¹Ø×¨Òµ +8 zju51 2026-03-31 10/500 2026-04-06 09:03 by ×íÎÌwl
[¿¼ÑÐ] 086000ÉúÎïÓëÒ½Ò©298µ÷¼ÁÇóÖú +9 ÔªÔªÇàÇà 2026-03-31 12/600 2026-04-05 21:03 by ѧԱ8dgXkO
[¿¼ÑÐ] 283Çóµ÷¼Á +10 A child 2026-04-04 10/500 2026-04-05 08:22 by qlm5820
[¿¼ÑÐ] Ò»Ö¾Ô¸±±½»´ó²ÄÁϹ¤³Ì×Ü·Ö358 +6 cs0106 2026-04-03 6/300 2026-04-04 11:20 by w_xuqing
[¿¼ÑÐ] 22408£¬264Çóµ÷¼Á +3 ywh729 2026-04-03 4/200 2026-04-04 11:04 by ywh729
[¿¼ÑÐ] 0710ÉúÎïѧ336·ÖÇóµ÷¼Á +6 kiyy 2026-04-01 8/400 2026-04-04 10:10 by kiyy
[¿¼ÑÐ] 0705Àíѧ294Çóµ÷¼Á +3 ³É¹û³É¹ûcg5 2026-04-03 3/150 2026-04-03 14:04 by simons1972
[¿¼ÑÐ] Ò»Ö¾Ô¸Öйú¿ÆÑ§Ôº´óѧ265Çóµ÷¼Á +9 Ìñµ­ye 2026-03-31 10/500 2026-04-03 11:10 by txp1986
[¿¼ÑÐ] µ÷¼Á +7 ìíáº. 2026-04-02 7/350 2026-04-03 09:11 by »¨ß»¹Ç·600
[¿¼ÑÐ] 312Çóµ÷¼Á +4 ÉÞÔÂÉ« 2026-04-02 5/250 2026-04-03 08:21 by fangshan711
[¿¼ÑÐ] 366Çóµ÷¼ÁÒ»Ö¾Ô¸¶«±±´óѧ +8 ÔËÆøÀ´µÃÈôÓÐËÆÎ 2026-04-02 8/400 2026-04-02 21:39 by dongzh2009
[¿¼ÑÐ] 085601Ò»Ö¾Ô¸ÖÐɽ´óѧÉîÛÚ²ÄÁϹ¤³Ì330Çóµ÷¼Á +8 pipiver 2026-03-30 8/400 2026-04-02 12:01 by ms629
[¿¼ÑÐ] Ò»Ö¾Ô¸±±½»´ó²ÄÁϹ¤³Ì×Ü·Ö358 +3 cs0106 2026-04-02 5/250 2026-04-02 11:37 by olim
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +12 Ò»ÑùYWY 2026-04-01 12/600 2026-04-02 09:15 by olim
[¿¼ÑÐ] Ò»Ö¾Ô¸Õã½­´óѧ¹¤¿Æ¶¯Á¦¹¤³Ì370,ÊýÒ»121,רҵ¿Î135£¬ÏÖÔÚÄÜÈ¥ÄÄÀï +3 080700µ÷¼Á 2026-03-30 4/200 2026-03-31 12:00 by KLMY666
[¿¼ÑÐ] һ־ԸʳƷ¿ÆÑ§Ó빤³Ì083200Çóµ÷¼Á +4 XQTJZ 2026-03-30 4/200 2026-03-31 04:10 by fmesaito
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û