SELF-INCOMPATIBILITY IN ACACIA-RETINODES - SITE OF POLLEN-TUBE ARREST IS THE NUCELLUS
SELF-INCOMPATIBILITY IN ACACIA-RETINODES - SITE OF POLLEN-TUBE ARREST IS THE NUCELLUS
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DOI：
10.1007/bf00392321
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发表时间：
1986-01-01
期刊：
影响因子：
4.3
通讯作者：
WILLIAMS, EG
中科院分区：
文献类型：
--
作者：
KENRICK, J;KAUL, V;WILLIAMS, EG
在自交不亲和的相思中。自花授粉后的受精胚囊频率仅为异交后的0.09-0.24。对切开的、压扁的或清除的整个胚珠的荧光和光学显微镜研究表明，大多数自体花粉管被阻止在珠心的第一层或第二层细胞内。讨论了珠心停滞代表自交不亲和的原始特征的可能性。
In self-incompatible Acacia retinodes Schldl. var uncifolia J. M. Black there is no inhibition of self pollen tubes before entry into the ovule, but the frequency of fertilized embryo sacs observed after self pollination is only 0.09-0.24 of that observed after outcrossing. Fluorescence- and light-microscope studies of sectioned, squashed or cleared whole ovules indicate that most self pollen tubes are arrested within the first or second layer of cells of the nucellus. The probability that nucellar arrest represents a primitive feature of self-incompatibility is discussed.